13,366
13,366 is a composite number, even.
13,366 (thirteen thousand three hundred sixty-six) is an even 5-digit number. It is a composite number with 8 divisors, and factors as 2 × 41 × 163. It is the 163rd triangular number. Written other ways, in hexadecimal, 0x3436.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 19
- Digit product
- 324
- Digital root
- 1
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 66,331
- Recamán's sequence
- a(47,543) = 13,366
- Square (n²)
- 178,649,956
- Cube (n³)
- 2,387,835,311,896
- Divisor count
- 8
- σ(n) — sum of divisors
- 20,664
- φ(n) — Euler's totient
- 6,480
- Sum of prime factors
- 206
Primality
Prime factorization: 2 × 41 × 163
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,366 = [115; (1, 1, 1, 1, 2, 1, 9, 3, 45, 1, 11, 1, 6, 1, 1, 6, 2, 8, 1, 3, 1, 1, 1, 3, …)]
Period length 54 — the block in parentheses repeats forever.
Representations
- In words
- thirteen thousand three hundred sixty-six
- Ordinal
- 13366th
- Binary
- 11010000110110
- Octal
- 32066
- Hexadecimal
- 0x3436
- Base64
- NDY=
- One's complement
- 52,169 (16-bit)
- Scientific notation
- 1.3366 × 10⁴
- As a duration
- 13,366 s = 3 hours, 42 minutes, 46 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιγτξϛʹ
- Mayan (base 20)
- 𝋡·𝋭·𝋨·𝋦
- Chinese
- 一萬三千三百六十六
- Chinese (financial)
- 壹萬參仟參佰陸拾陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,366 = 6
- e — Euler's number (e)
- Digit 13,366 = 2
- φ — Golden ratio (φ)
- Digit 13,366 = 3
- √2 — Pythagoras's (√2)
- Digit 13,366 = 4
- ln 2 — Natural log of 2
- Digit 13,366 = 6
- γ — Euler-Mascheroni (γ)
- Digit 13,366 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 13366, here are decompositions:
- 29 + 13337 = 13366
- 53 + 13313 = 13366
- 107 + 13259 = 13366
- 137 + 13229 = 13366
- 149 + 13217 = 13366
- 179 + 13187 = 13366
- 239 + 13127 = 13366
- 257 + 13109 = 13366
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 90 B6 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.52.54.
- Address
- 0.0.52.54
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.52.54
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,366 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯9 (13289.8 Hz, +10¢)
- Scientific pitch (C4 = 256 Hz): G♯9 (13004 Hz, +48¢ — about midway to A9)
- Baroque pitch (A4 = 415 Hz): A9 (13280 Hz, +11¢)
The digit sequence 13366 first appears in π at position 39,490 of the decimal expansion (the 39,490ordinal-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
- Triangular numbers — 1, 3, 6, 10, 15 … the counting numbers stacked into triangles, and Gauss's famous shortcut for summing them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.