20,320
20,320 is a composite number, even.
20,320 (twenty thousand three hundred twenty) is an even 5-digit number. It is a composite number with 24 divisors, and factors as 2⁵ × 5 × 127. Its proper divisors sum to 28,064, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x4F60.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 7
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 2,302
- Recamán's sequence
- a(86,576) = 20,320
- Square (n²)
- 412,902,400
- Cube (n³)
- 8,390,176,768,000
- Divisor count
- 24
- σ(n) — sum of divisors
- 48,384
- φ(n) — Euler's totient
- 8,064
- Sum of prime factors
- 142
Primality
Prime factorization: 2 5 × 5 × 127
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√20,320 = [142; (1, 1, 4, 1, 2, 6, 1, 1, 2, 31, 3, 1, 1, 7, 2, 1, 6, 1, 1, 1, 2, 3, 7, 71, …)]
Period length 48 — the block in parentheses repeats forever.
Representations
- In words
- twenty thousand three hundred twenty
- Ordinal
- 20320th
- Binary
- 100111101100000
- Octal
- 47540
- Hexadecimal
- 0x4F60
- Base64
- T2A=
- One's complement
- 45,215 (16-bit)
- Scientific notation
- 2.032 × 10⁴
- As a duration
- 20,320 s = 5 hours, 38 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵κτκʹ
- Mayan (base 20)
- 𝋢·𝋪·𝋰·𝋠
- Chinese
- 二萬零三百二十
- Chinese (financial)
- 貳萬零參佰貳拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 20,320 = 6
- e — Euler's number (e)
- Digit 20,320 = 0
- φ — Golden ratio (φ)
- Digit 20,320 = 5
- √2 — Pythagoras's (√2)
- Digit 20,320 = 9
- ln 2 — Natural log of 2
- Digit 20,320 = 8
- γ — Euler-Mascheroni (γ)
- Digit 20,320 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 20320, here are decompositions:
- 23 + 20297 = 20320
- 59 + 20261 = 20320
- 71 + 20249 = 20320
- 89 + 20231 = 20320
- 101 + 20219 = 20320
- 137 + 20183 = 20320
- 173 + 20147 = 20320
- 191 + 20129 = 20320
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 BD A0 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.79.96.
- Address
- 0.0.79.96
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.79.96
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 20320 first appears in π at position 168,885 of the decimal expansion (the 168,885ordinal-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.