498,640
498,640 is a composite number, even.
498,640 (four hundred ninety-eight thousand six hundred forty) is an even 6-digit number. It is a composite number with 40 divisors, and factors as 2⁴ × 5 × 23 × 271. Its proper divisors sum to 715,568, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x79BD0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 31
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 19 bits
- Reversed
- 46,894
- Square (n²)
- 248,641,849,600
- Cube (n³)
- 123,982,771,884,544,000
- Divisor count
- 40
- σ(n) — sum of divisors
- 1,214,208
- φ(n) — Euler's totient
- 190,080
- Sum of prime factors
- 307
Primality
Prime factorization: 2 4 × 5 × 23 × 271
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√498,640 = [706; (6, 1, 11, 1, 6, 2, 8, 2, 2, 2, 10, 21, 1, 33, 2, 28, 3, 28, 2, 33, 1, 21, 10, 2, …)]
Period length 34 — the block in parentheses repeats forever.
Representations
- In words
- four hundred ninety-eight thousand six hundred forty
- Ordinal
- 498640th
- Binary
- 1111001101111010000
- Octal
- 1715720
- Hexadecimal
- 0x79BD0
- Base64
- B5vQ
- One's complement
- 4,294,468,655 (32-bit)
- Scientific notation
- 4.9864 × 10⁵
- As a duration
- 498,640 s = 5 days, 18 hours, 30 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵υϟηχμʹ
- Chinese
- 四十九萬八千六百四十
- Chinese (financial)
- 肆拾玖萬捌仟陸佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 498640, here are decompositions:
- 29 + 498611 = 498640
- 41 + 498599 = 498640
- 83 + 498557 = 498640
- 89 + 498551 = 498640
- 113 + 498527 = 498640
- 173 + 498467 = 498640
- 179 + 498461 = 498640
- 239 + 498401 = 498640
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.7.155.208.
- Address
- 0.7.155.208
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.7.155.208
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 498,640 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 498640 first appears in π at position 934,872 of the decimal expansion (the 934,872ordinal-suffix:nd 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°.