513,808
513,808 is a composite number, even.
513,808 (five hundred thirteen thousand eight hundred eight) is an even 6-digit number. It is a composite number with 20 divisors, and factors as 2⁴ × 17 × 1,889. Its proper divisors sum to 540,812, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x7D710.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 25
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 19 bits
- Reversed
- 808,315
- Square (n²)
- 263,998,660,864
- Cube (n³)
- 135,644,623,941,210,112
- Divisor count
- 20
- σ(n) — sum of divisors
- 1,054,620
- φ(n) — Euler's totient
- 241,664
- Sum of prime factors
- 1,914
Primality
Prime factorization: 2 4 × 17 × 1889
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√513,808 = [716; (1, 4, 9, 1, 3, 10, 1, 16, 1, 3, 1, 2, 2, 4, 1, 4, 1, 3, 1, 1, 1, 3, 4, 1, …)]
Representations
- In words
- five hundred thirteen thousand eight hundred eight
- Ordinal
- 513808th
- Binary
- 1111101011100010000
- Octal
- 1753420
- Hexadecimal
- 0x7D710
- Base64
- B9cQ
- One's complement
- 4,294,453,487 (32-bit)
- Scientific notation
- 5.13808 × 10⁵
- As a duration
- 513,808 s = 5 days, 22 hours, 43 minutes, 28 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵φιγωηʹ
- Chinese
- 五十一萬三千八百零八
- Chinese (financial)
- 伍拾壹萬參仟捌佰零捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 513808, here are decompositions:
- 41 + 513767 = 513808
- 47 + 513761 = 513808
- 59 + 513749 = 513808
- 89 + 513719 = 513808
- 167 + 513641 = 513808
- 389 + 513419 = 513808
- 401 + 513407 = 513808
- 461 + 513347 = 513808
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.7.215.16.
- Address
- 0.7.215.16
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.7.215.16
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 513,808 and was likely granted around 1893.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 513808 first appears in π at position 11,976 of the decimal expansion (the 11,976ordinal-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°.