490,490
490,490 is a composite number, even.
490,490 (four hundred ninety thousand four hundred ninety) is an even 6-digit number. It is a composite number with 64 divisors, and factors as 2 × 5 × 7³ × 11 × 13. Its proper divisors sum to 719,110, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x77BFA.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 19 bits
- Reversed
- 94,094
- Square (n²)
- 240,580,440,100
- Cube (n³)
- 118,002,300,064,649,000
- Divisor count
- 64
- σ(n) — sum of divisors
- 1,209,600
- φ(n) — Euler's totient
- 141,120
- Sum of prime factors
- 52
Primality
Prime factorization: 2 × 5 × 7 3 × 11 × 13
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√490,490 = [700; (2, 1, 6, 28, 2, 3, 2, 1, 1, 2, 1, 27, 1, 6, 2, 1, 2, 1, 1, 28, 140, 28, 1, 1, …)]
Period length 42 — the block in parentheses repeats forever.
Representations
- In words
- four hundred ninety thousand four hundred ninety
- Ordinal
- 490490th
- Binary
- 1110111101111111010
- Octal
- 1675772
- Hexadecimal
- 0x77BFA
- Base64
- B3v6
- One's complement
- 4,294,476,805 (32-bit)
- Scientific notation
- 4.9049 × 10⁵
- As a duration
- 490,490 s = 5 days, 16 hours, 14 minutes, 50 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵υϟυϟʹ
- Chinese
- 四十九萬零四百九十
- Chinese (financial)
- 肆拾玖萬零肆佰玖拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 490490, here are decompositions:
- 31 + 490459 = 490490
- 37 + 490453 = 490490
- 73 + 490417 = 490490
- 97 + 490393 = 490490
- 151 + 490339 = 490490
- 181 + 490309 = 490490
- 223 + 490267 = 490490
- 241 + 490249 = 490490
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.7.123.250.
- Address
- 0.7.123.250
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.7.123.250
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 490,490 and was likely granted around 1892.
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°.