13,445
13,445 is a composite number, odd.
13,445 (thirteen thousand four hundred forty-five) is an odd 5-digit number. It is a composite number with 4 divisors, and factors as 5 × 2,689. Written other ways, in hexadecimal, 0x3485.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 17
- Digit product
- 240
- Digital root
- 8
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 54,431
- Recamán's sequence
- a(47,385) = 13,445
- Square (n²)
- 180,768,025
- Cube (n³)
- 2,430,426,096,125
- Divisor count
- 4
- σ(n) — sum of divisors
- 16,140
- φ(n) — Euler's totient
- 10,752
- Sum of prime factors
- 2,694
Primality
Prime factorization: 5 × 2689
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,445 = [115; (1, 20, 11, 1, 1, 4, 1, 2, 1, 57, 4, 5, 46, 5, 4, 57, 1, 2, 1, 4, 1, 1, 11, 20, …)]
Period length 26 — the block in parentheses repeats forever.
Representations
- In words
- thirteen thousand four hundred forty-five
- Ordinal
- 13445th
- Binary
- 11010010000101
- Octal
- 32205
- Hexadecimal
- 0x3485
- Base64
- NIU=
- One's complement
- 52,090 (16-bit)
- Scientific notation
- 1.3445 × 10⁴
- As a duration
- 13,445 s = 3 hours, 44 minutes, 5 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιγυμεʹ
- Mayan (base 20)
- 𝋡·𝋭·𝋬·𝋥
- Chinese
- 一萬三千四百四十五
- Chinese (financial)
- 壹萬參仟肆佰肆拾伍
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,445 = 5
- e — Euler's number (e)
- Digit 13,445 = 0
- φ — Golden ratio (φ)
- Digit 13,445 = 1
- √2 — Pythagoras's (√2)
- Digit 13,445 = 0
- ln 2 — Natural log of 2
- Digit 13,445 = 7
- γ — Euler-Mascheroni (γ)
- Digit 13,445 = 9
Also seen as
UTF-8 encoding: E3 92 85 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.52.133.
- Address
- 0.0.52.133
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.52.133
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,445 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯9 (13289.8 Hz, +20¢)
- Scientific pitch (C4 = 256 Hz): A9 (13777.2 Hz, -42¢)
- Baroque pitch (A4 = 415 Hz): A9 (13280 Hz, +21¢)
The digit sequence 13445 first appears in π at position 153,116 of the decimal expansion (the 153,116ordinal-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.