13,920
13,920 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 2,931
- Recamán's sequence
- a(20,876) = 13,920
- Square (n²)
- 193,766,400
- Cube (n³)
- 2,697,228,288,000
- Divisor count
- 48
- σ(n) — sum of divisors
- 45,360
- φ(n) — Euler's totient
- 3,584
- Sum of prime factors
- 47
Primality
Prime factorization: 2 5 × 3 × 5 × 29
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- thirteen thousand nine hundred twenty
- Ordinal
- 13920th
- Binary
- 11011001100000
- Octal
- 33140
- Hexadecimal
- 0x3660
- Base64
- NmA=
- One's complement
- 51,615 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ιγϡκʹ
- Mayan (base 20)
- 𝋡·𝋮·𝋰·𝋠
- Chinese
- 一萬三千九百二十
- Chinese (financial)
- 壹萬參仟玖佰貳拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,920 = 8
- e — Euler's number (e)
- Digit 13,920 = 2
- φ — Golden ratio (φ)
- Digit 13,920 = 4
- √2 — Pythagoras's (√2)
- Digit 13,920 = 0
- ln 2 — Natural log of 2
- Digit 13,920 = 9
- γ — Euler-Mascheroni (γ)
- Digit 13,920 = 5
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 13920, here are decompositions:
- 7 + 13913 = 13920
- 13 + 13907 = 13920
- 17 + 13903 = 13920
- 19 + 13901 = 13920
- 37 + 13883 = 13920
- 41 + 13879 = 13920
- 43 + 13877 = 13920
- 47 + 13873 = 13920
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 99 A0 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.54.96.
- Address
- 0.0.54.96
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.54.96
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 13920 first appears in π at position 43,063 of the decimal expansion (the 43,063ordinal-suffix:rd 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.