12,988
12,988 is a composite number, even.
12,988 (twelve thousand nine hundred eighty-eight) is an even 5-digit number. It is a composite number with 12 divisors, and factors as 2² × 17 × 191. Written other ways, in hexadecimal, 0x32BC.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 28
- Digit product
- 1,152
- Digital root
- 1
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 88,921
- Recamán's sequence
- a(48,299) = 12,988
- Square (n²)
- 168,688,144
- Cube (n³)
- 2,190,921,614,272
- Divisor count
- 12
- σ(n) — sum of divisors
- 24,192
- φ(n) — Euler's totient
- 6,080
- Sum of prime factors
- 212
Primality
Prime factorization: 2 2 × 17 × 191
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√12,988 = [113; (1, 27, 2, 56, 2, 27, 1, 226)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- twelve thousand nine hundred eighty-eight
- Ordinal
- 12988th
- Binary
- 11001010111100
- Octal
- 31274
- Hexadecimal
- 0x32BC
- Base64
- Mrw=
- One's complement
- 52,547 (16-bit)
- Scientific notation
- 1.2988 × 10⁴
- As a duration
- 12,988 s = 3 hours, 36 minutes, 28 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιβϡπηʹ
- Mayan (base 20)
- 𝋡·𝋬·𝋩·𝋨
- Chinese
- 一萬二千九百八十八
- Chinese (financial)
- 壹萬貳仟玖佰捌拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 12,988 = 5
- e — Euler's number (e)
- Digit 12,988 = 7
- φ — Golden ratio (φ)
- Digit 12,988 = 8
- √2 — Pythagoras's (√2)
- Digit 12,988 = 4
- ln 2 — Natural log of 2
- Digit 12,988 = 5
- γ — Euler-Mascheroni (γ)
- Digit 12,988 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 12988, here are decompositions:
- 5 + 12983 = 12988
- 29 + 12959 = 12988
- 47 + 12941 = 12988
- 71 + 12917 = 12988
- 89 + 12899 = 12988
- 167 + 12821 = 12988
- 179 + 12809 = 12988
- 197 + 12791 = 12988
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 8A BC (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.50.188.
- Address
- 0.0.50.188
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.50.188
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 12,988 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯9 (13289.8 Hz, -40¢)
- Scientific pitch (C4 = 256 Hz): G♯9 (13004 Hz, -2¢)
- Baroque pitch (A4 = 415 Hz): A9 (13280 Hz, -38¢)
The digit sequence 12988 first appears in π at position 92,652 of the decimal expansion (the 92,652ordinal-suffix:nd 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.