13,387
13,387 is a composite number, odd.
13,387 (thirteen thousand three hundred eighty-seven) is an odd 5-digit number. It is a composite number with 4 divisors, and factors as 11 × 1,217. Written other ways, in hexadecimal, 0x344B.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 22
- Digit product
- 504
- Digital root
- 4
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 78,331
- Recamán's sequence
- a(47,501) = 13,387
- Square (n²)
- 179,211,769
- Cube (n³)
- 2,399,107,951,603
- Divisor count
- 4
- σ(n) — sum of divisors
- 14,616
- φ(n) — Euler's totient
- 12,160
- Sum of prime factors
- 1,228
Primality
Prime factorization: 11 × 1217
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,387 = [115; (1, 2, 2, 1, 3, 1, 5, 6, 1, 5, 4, 2, 1, 2, 1, 1, 1, 25, 12, 1, 4, 2, 5, 2, …)]
Representations
- In words
- thirteen thousand three hundred eighty-seven
- Ordinal
- 13387th
- Binary
- 11010001001011
- Octal
- 32113
- Hexadecimal
- 0x344B
- Base64
- NEs=
- One's complement
- 52,148 (16-bit)
- Scientific notation
- 1.3387 × 10⁴
- As a duration
- 13,387 s = 3 hours, 43 minutes, 7 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιγτπζʹ
- Mayan (base 20)
- 𝋡·𝋭·𝋩·𝋧
- Chinese
- 一萬三千三百八十七
- Chinese (financial)
- 壹萬參仟參佰捌拾柒
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,387 = 3
- e — Euler's number (e)
- Digit 13,387 = 3
- φ — Golden ratio (φ)
- Digit 13,387 = 1
- √2 — Pythagoras's (√2)
- Digit 13,387 = 5
- ln 2 — Natural log of 2
- Digit 13,387 = 4
- γ — Euler-Mascheroni (γ)
- Digit 13,387 = 8
Also seen as
UTF-8 encoding: E3 91 8B (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.52.75.
- Address
- 0.0.52.75
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.52.75
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,387 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯9 (13289.8 Hz, +13¢)
- Scientific pitch (C4 = 256 Hz): A9 (13777.2 Hz, -50¢ — about midway to G♯9)
- Baroque pitch (A4 = 415 Hz): A9 (13280 Hz, +14¢)
The digit sequence 13387 first appears in π at position 64,417 of the decimal expansion (the 64,417ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.