12,990
12,990 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
- 9,921
- Recamán's sequence
- a(48,295) = 12,990
- Square (n²)
- 168,740,100
- Cube (n³)
- 2,191,933,899,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 31,248
- φ(n) — Euler's totient
- 3,456
- Sum of prime factors
- 443
Primality
Prime factorization: 2 × 3 × 5 × 433
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- twelve thousand nine hundred ninety
- Ordinal
- 12990th
- Binary
- 11001010111110
- Octal
- 31276
- Hexadecimal
- 0x32BE
- Base64
- Mr4=
- One's complement
- 52,545 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ιβϡϟʹ
- Mayan (base 20)
- 𝋡·𝋬·𝋩·𝋪
- Chinese
- 一萬二千九百九十
- Chinese (financial)
- 壹萬貳仟玖佰玖拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 12,990 = 5
- e — Euler's number (e)
- Digit 12,990 = 9
- φ — Golden ratio (φ)
- Digit 12,990 = 3
- √2 — Pythagoras's (√2)
- Digit 12,990 = 7
- ln 2 — Natural log of 2
- Digit 12,990 = 4
- γ — Euler-Mascheroni (γ)
- Digit 12,990 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 12990, here are decompositions:
- 7 + 12983 = 12990
- 11 + 12979 = 12990
- 17 + 12973 = 12990
- 23 + 12967 = 12990
- 31 + 12959 = 12990
- 37 + 12953 = 12990
- 67 + 12923 = 12990
- 71 + 12919 = 12990
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 8A BE (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.50.190.
- Address
- 0.0.50.190
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.50.190
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 12990 first appears in π at position 277,076 of the decimal expansion (the 277,076ordinal-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.