Live analysis

4,720

4,720 is a composite number, even.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

4,720 (four thousand seven hundred twenty) is an even 4-digit number. It is a composite number with 20 divisors, and factors as 2⁴ × 5 × 59. Its proper divisors sum to 6,440, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1270.

Abundant Number Arithmetic Number Gapful Number Octagonal Odious Number Pernicious Number Practical Number Recamán's Sequence Refactorable Number Self Number Semiperfect Number

Interestingness

★ ★ ★ ★ ★

8 notable facts · grade A

4,708 4,709 4,710 4,711 4,712 4,713 4,714 4,715 4,716 4,717 4,718 4,719 4,720 4,721 4,722 4,723 4,724 4,725 4,726 4,727 4,728 4,729 4,730 4,731 4,732

less more

Properties

Parity: Even
Digit count: 4
Digit sum: 13
Digit product: 0
Digital root: 4
Palindrome: No
Bit width: 13 bits
Reversed: 274
Recamán's sequence: a(5,300) = 4,720
Square (n²): 22,278,400
Cube (n³): 105,154,048,000
Divisor count: 20
σ(n) — sum of divisors: 11,160
φ(n) — Euler's totient: 1,856
Sum of prime factors: 72

Primality

Prime factorization: 2 ⁴ × 5 × 59

Nearest primes: 4,703 (−17) · 4,721 (+1)

Divisors & multiples

All divisors (20)

1 · 2 · 4 · 5 · 8 · 10 · 16 · 20 · 40 · 59 · 80 · 118 · 236 · 295 · 472 · 590 · 944 · 1180 · 2360 (half) · 4720

Aliquot sum (sum of proper divisors): 6,440

Factor pairs (a × b = 4,720)

1 × 4720

2 × 2360

4 × 1180

5 × 944

8 × 590

10 × 472

16 × 295

20 × 236

40 × 118

59 × 80

First multiples

4,720 · 9,440 (double) · 14,160 · 18,880 · 23,600 · 28,320 · 33,040 · 37,760 · 42,480 · 47,200

Sums & aliquot sequence

As consecutive integers: 942 + 943 + 944 + 945 + 946 132 + 133 + … + 163 51 + 52 + … + 109

Aliquot sequence: 4,720 → 6,440 → 10,840 → 13,640 → 20,920 → 26,240 → 38,020 → 41,864 → 36,646 → 19,298 → 9,652 → 8,268 → 12,900 → 25,292 → 18,976 → 18,446 → 10,498 — unresolved within range

Continued fraction of √n

√4,720 = [68; (1, 2, 2, 1, 3, 1, 2, 1, 2, 1, 3, 1, 2, 2, 1, 136)]

Period length 16 — the block in parentheses repeats forever.

Representations

In words: four thousand seven hundred twenty
Ordinal: 4720th
Binary: 1001001110000
Octal: 11160
Hexadecimal: 0x1270
Base64: EnA=
One's complement: 60,815 (16-bit)
Scientific notation: 4.72 × 10³
As a duration: 4,720 s = 1 hour, 18 minutes, 40 seconds

In other bases

ternary (3) 20110211

quaternary (4) 1021300

quinary (5) 122340

senary (6) 33504

septenary (7) 16522

nonary (9) 6424

undecimal (11) 3601

duodecimal (12) 2894

tridecimal (13) 21c1

tetradecimal (14) 1a12

pentadecimal (15) 15ea

As an angle

4,720° = 13 × 360° + 40°

40° ≈ 0.698 rad

Compass bearing: NE (northeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
Egyptian hieroglyphic: 𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
Greek (Milesian): ͵δψκʹ
Mayan (base 20): 𝋫·𝋰·𝋠
Chinese: 四千七百二十
Chinese (financial): 肆仟柒佰貳拾

In other modern scripts

Eastern Arabic ٤٧٢٠ Devanagari ४७२० Bengali ৪৭২০ Tamil ௪௭௨௦ Thai ๔๗๒๐ Tibetan ༤༧༢༠ Khmer ៤៧២០ Lao ໔໗໒໐ Burmese ၄၇၂၀

Digit at this position in famous constants

π — Pi (π): Digit 4,720 = 6
e — Euler's number (e): Digit 4,720 = 6
φ — Golden ratio (φ): Digit 4,720 = 6
√2 — Pythagoras's (√2): Digit 4,720 = 7
ln 2 — Natural log of 2: Digit 4,720 = 8
γ — Euler-Mascheroni (γ): Digit 4,720 = 4

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 4720, here are decompositions:

17 + 4703 = 4720
29 + 4691 = 4720
41 + 4679 = 4720
47 + 4673 = 4720
71 + 4649 = 4720
83 + 4637 = 4720
137 + 4583 = 4720
173 + 4547 = 4720

Showing the first eight; more decompositions exist.

Unicode codepoint

ተ

Ethiopic Syllable Ta

U+1270

Other letter (Lo)

UTF-8 encoding: E1 89 B0 (3 bytes).

Lookup U+1270 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#001270

RGB(0, 18, 112)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.18.112.

Address: 0.0.18.112
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.18.112

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

Musical pitch

Heard as a frequency, 4,720 Hz is closest to:

Concert pitch (A4 = 440 Hz): D8 (4698.6 Hz, +8¢)
Scientific pitch (C4 = 256 Hz): D8 (4597.6 Hz, +45¢ — about midway to D♯8)
Baroque pitch (A4 = 415 Hz): D♯8 (4695.2 Hz, +9¢)

Position in π

The digit sequence 4720 first appears in π at position 19,025 of the decimal expansion (the 19,025ordinal-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 4720 on Pi Search ↗