12,980
12,980 is a composite number, even.
12,980 (twelve thousand nine hundred eighty) is an even 5-digit number. It is a composite number with 24 divisors, and factors as 2² × 5 × 11 × 59. Its proper divisors sum to 17,260, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x32B4.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 20
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 8,921
- Recamán's sequence
- a(48,315) = 12,980
- Square (n²)
- 168,480,400
- Cube (n³)
- 2,186,875,592,000
- Divisor count
- 24
- σ(n) — sum of divisors
- 30,240
- φ(n) — Euler's totient
- 4,640
- Sum of prime factors
- 79
Primality
Prime factorization: 2 2 × 5 × 11 × 59
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√12,980 = [113; (1, 13, 4, 13, 1, 226)]
Period length 6 — the block in parentheses repeats forever.
Representations
- In words
- twelve thousand nine hundred eighty
- Ordinal
- 12980th
- Binary
- 11001010110100
- Octal
- 31264
- Hexadecimal
- 0x32B4
- Base64
- MrQ=
- One's complement
- 52,555 (16-bit)
- Scientific notation
- 1.298 × 10⁴
- As a duration
- 12,980 s = 3 hours, 36 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ιβϡπʹ
- Mayan (base 20)
- 𝋡·𝋬·𝋩·𝋠
- Chinese
- 一萬二千九百八十
- Chinese (financial)
- 壹萬貳仟玖佰捌拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 12,980 = 4
- e — Euler's number (e)
- Digit 12,980 = 7
- φ — Golden ratio (φ)
- Digit 12,980 = 9
- √2 — Pythagoras's (√2)
- Digit 12,980 = 8
- ln 2 — Natural log of 2
- Digit 12,980 = 6
- γ — Euler-Mascheroni (γ)
- Digit 12,980 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 12980, here are decompositions:
- 7 + 12973 = 12980
- 13 + 12967 = 12980
- 61 + 12919 = 12980
- 73 + 12907 = 12980
- 127 + 12853 = 12980
- 139 + 12841 = 12980
- 151 + 12829 = 12980
- 157 + 12823 = 12980
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 8A B4 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.50.180.
- Address
- 0.0.50.180
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.50.180
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 12,980 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯9 (13289.8 Hz, -41¢)
- Scientific pitch (C4 = 256 Hz): G♯9 (13004 Hz, -3¢)
- Baroque pitch (A4 = 415 Hz): A9 (13280 Hz, -40¢)
The digit sequence 12980 first appears in π at position 222,258 of the decimal expansion (the 222,258ordinal-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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.