12,864
12,864 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 21
- Digit product
- 384
- Digital root
- 3
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 46,821
- Recamán's sequence
- a(48,547) = 12,864
- Square (n²)
- 165,482,496
- Cube (n³)
- 2,128,766,828,544
- Divisor count
- 28
- σ(n) — sum of divisors
- 34,544
- φ(n) — Euler's totient
- 4,224
- Sum of prime factors
- 82
Primality
Prime factorization: 2 6 × 3 × 67
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- twelve thousand eight hundred sixty-four
- Ordinal
- 12864th
- Binary
- 11001001000000
- Octal
- 31100
- Hexadecimal
- 0x3240
- Base64
- MkA=
- One's complement
- 52,671 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιβωξδʹ
- Mayan (base 20)
- 𝋡·𝋬·𝋣·𝋤
- Chinese
- 一萬二千八百六十四
- Chinese (financial)
- 壹萬貳仟捌佰陸拾肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 12,864 = 2
- e — Euler's number (e)
- Digit 12,864 = 0
- φ — Golden ratio (φ)
- Digit 12,864 = 0
- √2 — Pythagoras's (√2)
- Digit 12,864 = 7
- ln 2 — Natural log of 2
- Digit 12,864 = 0
- γ — Euler-Mascheroni (γ)
- Digit 12,864 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 12864, here are decompositions:
- 11 + 12853 = 12864
- 23 + 12841 = 12864
- 41 + 12823 = 12864
- 43 + 12821 = 12864
- 73 + 12791 = 12864
- 83 + 12781 = 12864
- 101 + 12763 = 12864
- 107 + 12757 = 12864
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 89 80 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.50.64.
- Address
- 0.0.50.64
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.50.64
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 12864 first appears in π at position 33,513 of the decimal expansion (the 33,513ordinal-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.