13,172
13,172 is a composite number, even.
13,172 (thirteen thousand one hundred seventy-two) is an even 5-digit number. It is a composite number with 12 divisors, and factors as 2² × 37 × 89. Written other ways, in hexadecimal, 0x3374.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 14
- Digit product
- 42
- Digital root
- 5
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 27,131
- Recamán's sequence
- a(47,931) = 13,172
- Square (n²)
- 173,501,584
- Cube (n³)
- 2,285,362,864,448
- Divisor count
- 12
- σ(n) — sum of divisors
- 23,940
- φ(n) — Euler's totient
- 6,336
- Sum of prime factors
- 130
Primality
Prime factorization: 2 2 × 37 × 89
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,172 = [114; (1, 3, 2, 1, 56, 1, 2, 3, 1, 228)]
Period length 10 — the block in parentheses repeats forever.
Representations
- In words
- thirteen thousand one hundred seventy-two
- Ordinal
- 13172nd
- Binary
- 11001101110100
- Octal
- 31564
- Hexadecimal
- 0x3374
- Base64
- M3Q=
- One's complement
- 52,363 (16-bit)
- Scientific notation
- 1.3172 × 10⁴
- As a duration
- 13,172 s = 3 hours, 39 minutes, 32 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ιγροβʹ
- Mayan (base 20)
- 𝋡·𝋬·𝋲·𝋬
- Chinese
- 一萬三千一百七十二
- Chinese (financial)
- 壹萬參仟壹佰柒拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,172 = 7
- e — Euler's number (e)
- Digit 13,172 = 6
- φ — Golden ratio (φ)
- Digit 13,172 = 8
- √2 — Pythagoras's (√2)
- Digit 13,172 = 9
- ln 2 — Natural log of 2
- Digit 13,172 = 9
- γ — Euler-Mascheroni (γ)
- Digit 13,172 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 13172, here are decompositions:
- 13 + 13159 = 13172
- 73 + 13099 = 13172
- 79 + 13093 = 13172
- 109 + 13063 = 13172
- 139 + 13033 = 13172
- 163 + 13009 = 13172
- 193 + 12979 = 13172
- 199 + 12973 = 13172
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 8D B4 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.51.116.
- Address
- 0.0.51.116
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.51.116
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,172 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯9 (13289.8 Hz, -15¢)
- Scientific pitch (C4 = 256 Hz): G♯9 (13004 Hz, +22¢)
- Baroque pitch (A4 = 415 Hz): A9 (13280 Hz, -14¢)
The digit sequence 13172 first appears in π at position 173,211 of the decimal expansion (the 173,211ordinal-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.