520,144
520,144 is a composite number, even.
520,144 (five hundred twenty thousand one hundred forty-four) is an even 6-digit number. It is a composite number with 40 divisors, and factors as 2⁴ × 19 × 29 × 59. Its proper divisors sum to 595,856, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x7EFD0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 16
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 19 bits
- Reversed
- 441,025
- Recamán's sequence
- a(164,560) = 520,144
- Square (n²)
- 270,549,780,736
- Cube (n³)
- 140,724,845,151,145,984
- Divisor count
- 40
- σ(n) — sum of divisors
- 1,116,000
- φ(n) — Euler's totient
- 233,856
- Sum of prime factors
- 115
Primality
Prime factorization: 2 4 × 19 × 29 × 59
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√520,144 = [721; (4, 1, 3, 6, 6, 1, 3, 2, 4, 12, 1, 1, 1, 7, 1, 7, 7, 1, 3, 11, 1, 1, 1, 28, …)]
Period length 58 — the block in parentheses repeats forever.
Representations
- In words
- five hundred twenty thousand one hundred forty-four
- Ordinal
- 520144th
- Binary
- 1111110111111010000
- Octal
- 1767720
- Hexadecimal
- 0x7EFD0
- Base64
- B+/Q
- One's complement
- 4,294,447,151 (32-bit)
- Scientific notation
- 5.20144 × 10⁵
- As a duration
- 520,144 s = 6 days, 29 minutes, 4 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵φκρμδʹ
- Chinese
- 五十二萬零一百四十四
- Chinese (financial)
- 伍拾貳萬零壹佰肆拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 520144, here are decompositions:
- 41 + 520103 = 520144
- 71 + 520073 = 520144
- 101 + 520043 = 520144
- 113 + 520031 = 520144
- 173 + 519971 = 520144
- 197 + 519947 = 520144
- 227 + 519917 = 520144
- 263 + 519881 = 520144
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.7.239.208.
- Address
- 0.7.239.208
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.7.239.208
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 520,144 and was likely granted around 1894.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 520144 first appears in π at position 561,707 of the decimal expansion (the 561,707ordinal-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°.