20,472
20,472 is a composite number, even.
20,472 (twenty thousand four hundred seventy-two) is an even 5-digit number. It is a composite number with 16 divisors, and factors as 2³ × 3 × 853. Its proper divisors sum to 30,768, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x4FF8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 27,402
- Recamán's sequence
- a(86,272) = 20,472
- Square (n²)
- 419,102,784
- Cube (n³)
- 8,579,872,194,048
- Divisor count
- 16
- σ(n) — sum of divisors
- 51,240
- φ(n) — Euler's totient
- 6,816
- Sum of prime factors
- 862
Primality
Prime factorization: 2 3 × 3 × 853
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√20,472 = [143; (12, 2, 3, 1, 1, 4, 2, 5, 2, 1, 1, 3, 5, 1, 4, 3, 1, 2, 2, 23, 2, 2, 1, 3, …)]
Period length 40 — the block in parentheses repeats forever.
Representations
- In words
- twenty thousand four hundred seventy-two
- Ordinal
- 20472nd
- Binary
- 100111111111000
- Octal
- 47770
- Hexadecimal
- 0x4FF8
- Base64
- T/g=
- One's complement
- 45,063 (16-bit)
- Scientific notation
- 2.0472 × 10⁴
- As a duration
- 20,472 s = 5 hours, 41 minutes, 12 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹 𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵κυοβʹ
- Mayan (base 20)
- 𝋢·𝋫·𝋣·𝋬
- Chinese
- 二萬零四百七十二
- Chinese (financial)
- 貳萬零肆佰柒拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 20,472 = 3
- e — Euler's number (e)
- Digit 20,472 = 7
- φ — Golden ratio (φ)
- Digit 20,472 = 6
- √2 — Pythagoras's (√2)
- Digit 20,472 = 7
- ln 2 — Natural log of 2
- Digit 20,472 = 9
- γ — Euler-Mascheroni (γ)
- Digit 20,472 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 20472, here are decompositions:
- 29 + 20443 = 20472
- 31 + 20441 = 20472
- 41 + 20431 = 20472
- 61 + 20411 = 20472
- 73 + 20399 = 20472
- 79 + 20393 = 20472
- 83 + 20389 = 20472
- 103 + 20369 = 20472
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 BF B8 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.79.248.
- Address
- 0.0.79.248
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.79.248
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 20472 first appears in π at position 86,204 of the decimal expansion (the 86,204ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.