55,728
55,728 is a composite number, even.
55,728 (fifty-five thousand seven hundred twenty-eight) is an even 5-digit number. It is a composite number with 50 divisors, and factors as 2⁴ × 3⁴ × 43. Its proper divisors sum to 109,316, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xD9B0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 27
- Digit product
- 2,800
- Digital root
- 9
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 82,755
- Recamán's sequence
- a(292,364) = 55,728
- Square (n²)
- 3,105,609,984
- Cube (n³)
- 173,069,433,188,352
- Divisor count
- 50
- σ(n) — sum of divisors
- 165,044
- φ(n) — Euler's totient
- 18,144
- Sum of prime factors
- 63
Primality
Prime factorization: 2 4 × 3 4 × 43
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√55,728 = [236; (14, 1, 3, 29, 3, 1, 14, 472)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- fifty-five thousand seven hundred twenty-eight
- Ordinal
- 55728th
- Binary
- 1101100110110000
- Octal
- 154660
- Hexadecimal
- 0xD9B0
- Base64
- 2bA=
- One's complement
- 9,807 (16-bit)
- Scientific notation
- 5.5728 × 10⁴
- As a duration
- 55,728 s = 15 hours, 28 minutes, 48 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵νεψκηʹ
- Mayan (base 20)
- 𝋦·𝋳·𝋦·𝋨
- Chinese
- 五萬五千七百二十八
- Chinese (financial)
- 伍萬伍仟柒佰貳拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 55,728 = 4
- e — Euler's number (e)
- Digit 55,728 = 6
- φ — Golden ratio (φ)
- Digit 55,728 = 8
- √2 — Pythagoras's (√2)
- Digit 55,728 = 6
- ln 2 — Natural log of 2
- Digit 55,728 = 6
- γ — Euler-Mascheroni (γ)
- Digit 55,728 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 55728, here are decompositions:
- 7 + 55721 = 55728
- 11 + 55717 = 55728
- 17 + 55711 = 55728
- 31 + 55697 = 55728
- 37 + 55691 = 55728
- 47 + 55681 = 55728
- 61 + 55667 = 55728
- 67 + 55661 = 55728
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.217.176.
- Address
- 0.0.217.176
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.217.176
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 55728 first appears in π at position 72,267 of the decimal expansion (the 72,267ordinal-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°.