Number

740

740 is a composite number, even, a calendar year.

Abundant Number Arithmetic Number Descending Digits Odious Number Pernicious Number Practical Number Recamán's Sequence Semiperfect Number Year

Historical context — 740 AD

Calendar year

Year 740 (DCCXL) was a leap year starting on Friday of the Julian calendar, the 740th year of the Common Era (CE) and Anno Domini (AD) designations, the 740th year of the 1st millennium, the 40th year of the 8th century, and the 1st year of the 740s decade.

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Historical context — 740 BC

Decade

This article concerns the period 749 BC – 740 BC.

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Year facts

Year type: Leap year
Divisible by 4 and not by 100; February has 29 days.
Days in year: 366
ISO weeks: 52
Started on: Monday
January 1, 740
Ended on: Tuesday
December 31, 740
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 740s
740–749
Century: 8th century
701–800
Millennium: 1st millennium
1–1000
Years ago: 1,286
1286 years before 2026.

In other calendars

Hebrew: 4500 / 4501 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 122 / 123 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Metal zodiac:Dragon
Sexagenary cycle position 17 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1283 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 118 / 119 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 732 / 733 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 662 / 661 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 3
Digit sum: 11
Digit product: 0
Digital root: 2
Palindrome: No
Bit width: 10 bits
Reversed: 47
Recamán's sequence: a(951) = 740
Square (n²): 547,600
Cube (n³): 405,224,000
Divisor count: 12
σ(n) — sum of divisors: 1,596
φ(n) — Euler's totient: 288
Sum of prime factors: 46

Primality

Prime factorization: 2 ² × 5 × 37

Nearest primes: 739 (−1) · 743 (+3)

Divisors & multiples

All divisors (12)

1 · 2 · 4 · 5 · 10 · 20 · 37 · 74 · 148 · 185 · 370 (half) · 740

Aliquot sum (sum of proper divisors): 856

Factor pairs (a × b = 740)

1 × 740

2 × 370

4 × 185

5 × 148

10 × 74

20 × 37

First multiples

740 · 1,480 (double) · 2,220 · 2,960 · 3,700 · 4,440 · 5,180 · 5,920 · 6,660 · 7,400

Sums & aliquot sequence

As a sum of two squares: 8² + 26² = 16² + 22²

As consecutive integers: 146 + 147 + 148 + 149 + 150 89 + 90 + … + 96 2 + 3 + … + 38

Aliquot sequence: 740 → 856 → 764 → 580 → 680 → 940 → 1,076 → 814 → 554 → 280 → 440 → 640 → 890 → 730 → 602 → 454 → 230 — unresolved within range

Representations

In words: seven hundred forty
Ordinal: 740th
Roman numeral: DCCXL
Binary: 1011100100
Octal: 1344
Hexadecimal: 0x2E4
Base64: AuQ=
One's complement: 64,795 (16-bit)

In other bases

ternary (3) 1000102

quaternary (4) 23210

quinary (5) 10430

senary (6) 3232

septenary (7) 2105

nonary (9) 1012

undecimal (11) 613

duodecimal (12) 518

tridecimal (13) 44c

tetradecimal (14) 3ac

pentadecimal (15) 345

Historical numeral systems

Babylonian (base 60): 𒌋𒁹𒁹 𒌋𒌋
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
Greek (Milesian): ψμʹ
Mayan (base 20): 𝋡·𝋱·𝋠
Chinese: 七百四十
Chinese (financial): 柒佰肆拾

In other modern scripts

Eastern Arabic ٧٤٠ Devanagari ७४० Bengali ৭৪০ Tamil ௭௪௦ Thai ๗๔๐ Tibetan ༧༤༠ Khmer ៧៤០ Lao ໗໔໐ Burmese ၇၄၀

Digit at this position in famous constants

π — Pi (π): Digit 740 = 7
e — Euler's number (e): Digit 740 = 8
φ — Golden ratio (φ): Digit 740 = 0
√2 — Pythagoras's (√2): Digit 740 = 6
ln 2 — Natural log of 2: Digit 740 = 1
γ — Euler-Mascheroni (γ): Digit 740 = 5

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 740, here are decompositions:

7 + 733 = 740
13 + 727 = 740
31 + 709 = 740
67 + 673 = 740
79 + 661 = 740
97 + 643 = 740
109 + 631 = 740
127 + 613 = 740

Showing the first eight; more decompositions exist.

Unicode codepoint

Modifier Letter Small Reversed Glottal Stop

U+02E4

Modifier letter (Lm)

UTF-8 encoding: CB A4 (2 bytes).

Lookup U+02E4 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0002E4

RGB(0, 2, 228)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.228.

Address: 0.0.2.228
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.2.228

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

NANP area code 740

The number 740 is an active NANP area code (North American Numbering Plan).

Primary area: Newark / Zanesville
Region: Ohio
Country: United States

Most NANP area codes have multiple overlays in dense regions; the primary area listed is the historic/largest population center for this code.

Look up area code 740 ↗