15,140
15,140 is a composite number, even.
15,140 (fifteen thousand one hundred forty) is an even 5-digit number. It is a composite number with 12 divisors, and factors as 2² × 5 × 757. Its proper divisors sum to 16,696, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x3B24.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 11
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 4,151
- Recamán's sequence
- a(5,036) = 15,140
- Square (n²)
- 229,219,600
- Cube (n³)
- 3,470,384,744,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 31,836
- φ(n) — Euler's totient
- 6,048
- Sum of prime factors
- 766
Primality
Prime factorization: 2 2 × 5 × 757
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√15,140 = [123; (22, 2, 1, 2, 1, 1, 3, 3, 1, 3, 12, 1, 2, 5, 3, 1, 60, 1, 3, 5, 2, 1, 12, 3, …)]
Period length 34 — the block in parentheses repeats forever.
Representations
- In words
- fifteen thousand one hundred forty
- Ordinal
- 15140th
- Binary
- 11101100100100
- Octal
- 35444
- Hexadecimal
- 0x3B24
- Base64
- OyQ=
- One's complement
- 50,395 (16-bit)
- Scientific notation
- 1.514 × 10⁴
- As a duration
- 15,140 s = 4 hours, 12 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ιερμʹ
- Mayan (base 20)
- 𝋡·𝋱·𝋱·𝋠
- Chinese
- 一萬五千一百四十
- Chinese (financial)
- 壹萬伍仟壹佰肆拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 15,140 = 4
- e — Euler's number (e)
- Digit 15,140 = 2
- φ — Golden ratio (φ)
- Digit 15,140 = 1
- √2 — Pythagoras's (√2)
- Digit 15,140 = 5
- ln 2 — Natural log of 2
- Digit 15,140 = 5
- γ — Euler-Mascheroni (γ)
- Digit 15,140 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 15140, here are decompositions:
- 3 + 15137 = 15140
- 19 + 15121 = 15140
- 67 + 15073 = 15140
- 79 + 15061 = 15140
- 109 + 15031 = 15140
- 127 + 15013 = 15140
- 157 + 14983 = 15140
- 193 + 14947 = 15140
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 AC A4 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.59.36.
- Address
- 0.0.59.36
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.59.36
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 15,140 Hz is closest to:
- Concert pitch (A4 = 440 Hz): A♯9 (14917.2 Hz, +26¢)
- Scientific pitch (C4 = 256 Hz): B9 (15464.4 Hz, -37¢)
- Baroque pitch (A4 = 415 Hz): B9 (14906.3 Hz, +27¢)
The digit sequence 15140 first appears in π at position 4,536 of the decimal expansion (the 4,536ordinal-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.