738
738 is a composite number, even, a calendar year.
Historical context — 738 AD
Calendar year
Year 738 (DCCXXXVIII) was a common year starting on Wednesday of the Julian calendar, the 738th year of the Common Era (CE) and Anno Domini (AD) designations, the 738th year of the 1st millennium, the 38th year of the 8th century, and the 9th year of the 730s decade.
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Historical context — 738 BC
Decade
This article concerns the period 739 BC – 730 BC.
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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
-
Saturday
January 1, 738
- Ended on
-
Saturday
December 31, 738
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
730s
730–739
- Century
-
8th century
701–800
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,288
1288 years before 2026.
In other calendars
- Hebrew
-
4498 / 4499 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
120 / 121 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Tiger
Sexagenary cycle position 15 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1281 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
116 / 117 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
730 / 731 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
660 / 659 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 × 3 2 × 41
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- seven hundred thirty-eight
- Ordinal
- 738th
- Roman numeral
- DCCXXXVIII
- Binary
- 1011100010
- Octal
- 1342
- Hexadecimal
- 0x2E2
- Base64
- AuI=
- One's complement
- 64,797 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ψληʹ
- Mayan (base 20)
- 𝋡·𝋰·𝋲
- Chinese
- 七百三十八
- Chinese (financial)
- 柒佰參拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 738 = 2
- e — Euler's number (e)
- Digit 738 = 7
- φ — Golden ratio (φ)
- Digit 738 = 8
- √2 — Pythagoras's (√2)
- Digit 738 = 2
- ln 2 — Natural log of 2
- Digit 738 = 3
- γ — Euler-Mascheroni (γ)
- Digit 738 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 738, here are decompositions:
- 5 + 733 = 738
- 11 + 727 = 738
- 19 + 719 = 738
- 29 + 709 = 738
- 37 + 701 = 738
- 47 + 691 = 738
- 61 + 677 = 738
- 79 + 659 = 738
Showing the first eight; more decompositions exist.
UTF-8 encoding: CB A2 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.226.
- Address
- 0.0.2.226
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.2.226
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.