13,908
13,908 is a composite number, even.
13,908 (thirteen thousand nine hundred eight) is an even 5-digit number. It is a composite number with 24 divisors, and factors as 2² × 3 × 19 × 61. Its proper divisors sum to 20,812, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x3654.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 21
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 80,931
- Recamán's sequence
- a(20,900) = 13,908
- Square (n²)
- 193,432,464
- Cube (n³)
- 2,690,258,709,312
- Divisor count
- 24
- σ(n) — sum of divisors
- 34,720
- φ(n) — Euler's totient
- 4,320
- Sum of prime factors
- 87
Primality
Prime factorization: 2 2 × 3 × 19 × 61
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,908 = [117; (1, 13, 1, 2, 1, 13, 1, 234)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- thirteen thousand nine hundred eight
- Ordinal
- 13908th
- Binary
- 11011001010100
- Octal
- 33124
- Hexadecimal
- 0x3654
- Base64
- NlQ=
- One's complement
- 51,627 (16-bit)
- Scientific notation
- 1.3908 × 10⁴
- As a duration
- 13,908 s = 3 hours, 51 minutes, 48 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιγϡηʹ
- Mayan (base 20)
- 𝋡·𝋮·𝋯·𝋨
- Chinese
- 一萬三千九百零八
- Chinese (financial)
- 壹萬參仟玖佰零捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,908 = 9
- e — Euler's number (e)
- Digit 13,908 = 9
- φ — Golden ratio (φ)
- Digit 13,908 = 7
- √2 — Pythagoras's (√2)
- Digit 13,908 = 0
- ln 2 — Natural log of 2
- Digit 13,908 = 4
- γ — Euler-Mascheroni (γ)
- Digit 13,908 = 3
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 13908, here are decompositions:
- 5 + 13903 = 13908
- 7 + 13901 = 13908
- 29 + 13879 = 13908
- 31 + 13877 = 13908
- 67 + 13841 = 13908
- 79 + 13829 = 13908
- 101 + 13807 = 13908
- 109 + 13799 = 13908
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 99 94 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.54.84.
- Address
- 0.0.54.84
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.54.84
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,908 Hz is closest to:
- Concert pitch (A4 = 440 Hz): A9 (14080 Hz, -21¢)
- Scientific pitch (C4 = 256 Hz): A9 (13777.2 Hz, +16¢)
- Baroque pitch (A4 = 415 Hz): A♯9 (14069.7 Hz, -20¢)
The digit sequence 13908 first appears in π at position 26,309 of the decimal expansion (the 26,309ordinal-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.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.