13,890
13,890 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 21
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 9,831
- Recamán's sequence
- a(20,936) = 13,890
- Square (n²)
- 192,932,100
- Cube (n³)
- 2,679,826,869,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 33,408
- φ(n) — Euler's totient
- 3,696
- Sum of prime factors
- 473
Primality
Prime factorization: 2 × 3 × 5 × 463
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- thirteen thousand eight hundred ninety
- Ordinal
- 13890th
- Binary
- 11011001000010
- Octal
- 33102
- Hexadecimal
- 0x3642
- Base64
- NkI=
- One's complement
- 51,645 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ιγωϟʹ
- Mayan (base 20)
- 𝋡·𝋮·𝋮·𝋪
- Chinese
- 一萬三千八百九十
- Chinese (financial)
- 壹萬參仟捌佰玖拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,890 = 3
- e — Euler's number (e)
- Digit 13,890 = 3
- φ — Golden ratio (φ)
- Digit 13,890 = 5
- √2 — Pythagoras's (√2)
- Digit 13,890 = 6
- ln 2 — Natural log of 2
- Digit 13,890 = 0
- γ — Euler-Mascheroni (γ)
- Digit 13,890 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 13890, here are decompositions:
- 7 + 13883 = 13890
- 11 + 13879 = 13890
- 13 + 13877 = 13890
- 17 + 13873 = 13890
- 31 + 13859 = 13890
- 59 + 13831 = 13890
- 61 + 13829 = 13890
- 83 + 13807 = 13890
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 99 82 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.54.66.
- Address
- 0.0.54.66
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.54.66
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 13890 first appears in π at position 1,967 of the decimal expansion (the 1,967ordinal-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.