520,128
520,128 is a composite number, even.
520,128 (five hundred twenty thousand one hundred twenty-eight) is an even 6-digit number. It is a composite number with 112 divisors, and factors as 2⁶ × 3³ × 7 × 43. Its proper divisors sum to 1,268,032, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x7EFC0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 18
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 19 bits
- Reversed
- 821,025
- Recamán's sequence
- a(164,528) = 520,128
- Square (n²)
- 270,533,136,384
- Cube (n³)
- 140,711,859,161,137,152
- Divisor count
- 112
- σ(n) — sum of divisors
- 1,788,160
- φ(n) — Euler's totient
- 145,152
- Sum of prime factors
- 71
Primality
Prime factorization: 2 6 × 3 3 × 7 × 43
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√520,128 = [721; (5, 39, 1, 6, 2, 159, 1, 3, 1, 359, 1, 3, 1, 159, 2, 6, 1, 39, 5, 1442)]
Period length 20 — the block in parentheses repeats forever.
Representations
- In words
- five hundred twenty thousand one hundred twenty-eight
- Ordinal
- 520128th
- Binary
- 1111110111111000000
- Octal
- 1767700
- Hexadecimal
- 0x7EFC0
- Base64
- B+/A
- One's complement
- 4,294,447,167 (32-bit)
- Scientific notation
- 5.20128 × 10⁵
- As a duration
- 520,128 s = 6 days, 28 minutes, 48 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵φκρκηʹ
- Chinese
- 五十二萬零一百二十八
- Chinese (financial)
- 伍拾貳萬零壹佰貳拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 520128, here are decompositions:
- 5 + 520123 = 520128
- 17 + 520111 = 520128
- 61 + 520067 = 520128
- 97 + 520031 = 520128
- 107 + 520021 = 520128
- 109 + 520019 = 520128
- 131 + 519997 = 520128
- 139 + 519989 = 520128
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.7.239.192.
- Address
- 0.7.239.192
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.7.239.192
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 520,128 and was likely granted around 1894.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.