Number

1,430

1,430 is a composite number, even, a calendar year.

1,430 (one thousand four hundred thirty) is an even 4-digit number. It is a composite number with 16 divisors, and factors as 2 × 5 × 11 × 13. Its proper divisors sum to 1,594, more than the number itself, making it an abundant number. It is a Catalan number. Written other ways, in Roman numerals it is MCDXXX and in binary, 10110010110.

Abundant Number Arithmetic Number Catalan Number Cube-Free Evil Number Gapful Number Recamán's Sequence Semiperfect Number Squarefree Year

Interestingness

★ ★ ★ ★ ☆

7 notable facts · grade B

1,418 1,419 1,420 1,421 1,422 1,423 1,424 1,425 1,426 1,427 1,428 1,429 1,430 1,431 1,432 1,433 1,434 1,435 1,436 1,437 1,438 1,439 1,440 1,441 1,442

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Historical context — 1430 AD

Calendar year

1430 (MCDXXX) was a common year starting on Sunday of the Julian calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →

Year facts

Year type: Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
Days in year: 365
ISO weeks: 52
Started on: Friday
January 1, 1430
Ended on: Friday
December 31, 1430
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 1430s
1430–1439
Century: 15th century
1401–1500
Millennium: 2nd millennium
1001–2000
Years ago: 596
596 years before 2026.

In other calendars

Hebrew: 5190 / 5191 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 833 / 834 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Metal zodiac:Dog
Sexagenary cycle position 47 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1973 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 808 / 809 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1422 / 1423 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1352 / 1351 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 4
Digit sum: 8
Digit product: 0
Digital root: 8
Palindrome: No
Bit width: 11 bits
Reversed: 341
Recamán's sequence: a(1,700) = 1,430
Square (n²): 2,044,900
Cube (n³): 2,924,207,000
Divisor count: 16
σ(n) — sum of divisors: 3,024
φ(n) — Euler's totient: 480
Sum of prime factors: 31

Primality

Prime factorization: 2 × 5 × 11 × 13

Nearest primes: 1,429 (−1) · 1,433 (+3)

Divisors & multiples

All divisors (16)

1 · 2 · 5 · 10 · 11 · 13 · 22 · 26 · 55 · 65 · 110 · 130 · 143 · 286 · 715 (half) · 1430

Aliquot sum (sum of proper divisors): 1,594

Factor pairs (a × b = 1,430)

1 × 1430

2 × 715

5 × 286

10 × 143

11 × 130

13 × 110

22 × 65

26 × 55

First multiples

1,430 · 2,860 (double) · 4,290 · 5,720 · 7,150 · 8,580 · 10,010 · 11,440 · 12,870 · 14,300

Sums & aliquot sequence

As consecutive integers: 356 + 357 + 358 + 359 284 + 285 + 286 + 287 + 288 125 + 126 + … + 135 104 + 105 + … + 116

Aliquot sequence: 1,430 → 1,594 → 800 → 1,153 → 1 → 0 — terminates at zero

Continued fraction of √n

√1,430 = [37; (1, 4, 2, 2, 2, 4, 1, 74)]

Period length 8 — the block in parentheses repeats forever.

Representations

In words: one thousand four hundred thirty
Ordinal: 1430th
Roman numeral: MCDXXX
Binary: 10110010110
Octal: 2626
Hexadecimal: 0x596
Base64: BZY=
One's complement: 64,105 (16-bit)
Scientific notation: 1.43 × 10³
As a duration: 1,430 s = 23 minutes, 50 seconds

In other bases

ternary (3) 1221222

quaternary (4) 112112

quinary (5) 21210

senary (6) 10342

septenary (7) 4112

nonary (9) 1858

undecimal (11) 1090

duodecimal (12) 9b2

tridecimal (13) 860

tetradecimal (14) 742

pentadecimal (15) 655

As an angle

1,430° = 3 × 360° + 350°

350° ≈ 6.109 rad

Compass bearing: N (north)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋
Egyptian hieroglyphic: 𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆
Greek (Milesian): ͵αυλʹ
Mayan (base 20): 𝋣·𝋫·𝋪
Chinese: 一千四百三十
Chinese (financial): 壹仟肆佰參拾

In other modern scripts

Eastern Arabic ١٤٣٠ Devanagari १४३० Bengali ১৪৩০ Tamil ௧௪௩௦ Thai ๑๔๓๐ Tibetan ༡༤༣༠ Khmer ១៤៣០ Lao ໑໔໓໐ Burmese ၁၄၃၀

Digit at this position in famous constants

π — Pi (π): Digit 1,430 = 9
e — Euler's number (e): Digit 1,430 = 1
φ — Golden ratio (φ): Digit 1,430 = 6
√2 — Pythagoras's (√2): Digit 1,430 = 0
ln 2 — Natural log of 2: Digit 1,430 = 7
γ — Euler-Mascheroni (γ): Digit 1,430 = 0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1430, here are decompositions:

3 + 1427 = 1430
7 + 1423 = 1430
31 + 1399 = 1430
103 + 1327 = 1430
109 + 1321 = 1430
127 + 1303 = 1430
139 + 1291 = 1430
151 + 1279 = 1430

Showing the first eight; more decompositions exist.

Unicode codepoint

Hebrew Accent Tipeha

U+0596

Non-spacing mark (Mn)

UTF-8 encoding: D6 96 (2 bytes).

Lookup U+0596 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000596

RGB(0, 5, 150)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.150.

Address: 0.0.5.150
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.5.150

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Musical pitch

Heard as a frequency, 1,430 Hz is closest to:

Concert pitch (A4 = 440 Hz): F6 (1396.9 Hz, +41¢)
Scientific pitch (C4 = 256 Hz): F♯6 (1448.2 Hz, -22¢)
Baroque pitch (A4 = 415 Hz): F♯6 (1395.9 Hz, +42¢)

Position in π

The digit sequence 1430 first appears in π at position 39,174 of the decimal expansion (the 39,174ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.

Look up 1430 on Pi Search ↗