13,810
13,810 is a composite number, even.
13,810 (thirteen thousand eight hundred ten) is an even 5-digit number. It is a composite number with 8 divisors, and factors as 2 × 5 × 1,381. Written other ways, in hexadecimal, 0x35F2.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 13
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 1,831
- Recamán's sequence
- a(21,096) = 13,810
- Square (n²)
- 190,716,100
- Cube (n³)
- 2,633,789,341,000
- Divisor count
- 8
- σ(n) — sum of divisors
- 24,876
- φ(n) — Euler's totient
- 5,520
- Sum of prime factors
- 1,388
Primality
Prime factorization: 2 × 5 × 1381
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,810 = [117; (1, 1, 15, 5, 1, 25, 3, 1, 1, 2, 1, 2, 1, 5, 3, 2, 1, 1, 2, 2, 1, 1, 2, 3, …)]
Period length 39 — the block in parentheses repeats forever.
Representations
- In words
- thirteen thousand eight hundred ten
- Ordinal
- 13810th
- Binary
- 11010111110010
- Octal
- 32762
- Hexadecimal
- 0x35F2
- Base64
- NfI=
- One's complement
- 51,725 (16-bit)
- Scientific notation
- 1.381 × 10⁴
- As a duration
- 13,810 s = 3 hours, 50 minutes, 10 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋 𒌋
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆
- Greek (Milesian)
- ͵ιγωιʹ
- Mayan (base 20)
- 𝋡·𝋮·𝋪·𝋪
- Chinese
- 一萬三千八百一十
- Chinese (financial)
- 壹萬參仟捌佰壹拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,810 = 3
- e — Euler's number (e)
- Digit 13,810 = 1
- φ — Golden ratio (φ)
- Digit 13,810 = 6
- √2 — Pythagoras's (√2)
- Digit 13,810 = 0
- ln 2 — Natural log of 2
- Digit 13,810 = 7
- γ — Euler-Mascheroni (γ)
- Digit 13,810 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 13810, here are decompositions:
- 3 + 13807 = 13810
- 11 + 13799 = 13810
- 29 + 13781 = 13810
- 47 + 13763 = 13810
- 53 + 13757 = 13810
- 59 + 13751 = 13810
- 89 + 13721 = 13810
- 101 + 13709 = 13810
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 97 B2 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.53.242.
- Address
- 0.0.53.242
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.53.242
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,810 Hz is closest to:
- Concert pitch (A4 = 440 Hz): A9 (14080 Hz, -34¢)
- Scientific pitch (C4 = 256 Hz): A9 (13777.2 Hz, +4¢)
- Baroque pitch (A4 = 415 Hz): A♯9 (14069.7 Hz, -32¢)
The digit sequence 13810 first appears in π at position 16,239 of the decimal expansion (the 16,239ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.