12,801
12,801 is a composite number, odd.
12,801 (twelve thousand eight hundred one) is an odd 5-digit number. It is a composite number with 8 divisors, and factors as 3 × 17 × 251. Written other ways, in hexadecimal, 0x3201.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 12
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 10,821
- Recamán's sequence
- a(48,673) = 12,801
- Square (n²)
- 163,865,601
- Cube (n³)
- 2,097,643,558,401
- Divisor count
- 8
- σ(n) — sum of divisors
- 18,144
- φ(n) — Euler's totient
- 8,000
- Sum of prime factors
- 271
Primality
Prime factorization: 3 × 17 × 251
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√12,801 = [113; (7, 14, 1, 16, 2, 8, 1, 1, 3, 3, 3, 1, 27, 1, 1, 13, 1, 1, 1, 2, 1, 2, 1, 1, …)]
Period length 52 — the block in parentheses repeats forever.
Representations
- In words
- twelve thousand eight hundred one
- Ordinal
- 12801st
- Binary
- 11001000000001
- Octal
- 31001
- Hexadecimal
- 0x3201
- Base64
- MgE=
- One's complement
- 52,734 (16-bit)
- Scientific notation
- 1.2801 × 10⁴
- As a duration
- 12,801 s = 3 hours, 33 minutes, 21 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺
- Greek (Milesian)
- ͵ιβωαʹ
- Mayan (base 20)
- 𝋡·𝋬·𝋠·𝋡
- Chinese
- 一萬二千八百零一
- Chinese (financial)
- 壹萬貳仟捌佰零壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 12,801 = 3
- e — Euler's number (e)
- Digit 12,801 = 1
- φ — Golden ratio (φ)
- Digit 12,801 = 9
- √2 — Pythagoras's (√2)
- Digit 12,801 = 0
- ln 2 — Natural log of 2
- Digit 12,801 = 1
- γ — Euler-Mascheroni (γ)
- Digit 12,801 = 3
Also seen as
UTF-8 encoding: E3 88 81 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.50.1.
- Address
- 0.0.50.1
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.50.1
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 12,801 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G9 (12543.9 Hz, +35¢)
- Scientific pitch (C4 = 256 Hz): G♯9 (13004 Hz, -27¢)
- Baroque pitch (A4 = 415 Hz): G♯9 (12534.7 Hz, +36¢)
The digit sequence 12801 first appears in π at position 21,693 of the decimal expansion (the 21,693ordinal-suffix:rd 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.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.