470,640
470,640 is a composite number, even.
470,640 (four hundred seventy thousand six hundred forty) is an even 6-digit number. It is a composite number with 80 divisors, and factors as 2⁴ × 3 × 5 × 37 × 53. Its proper divisors sum to 1,056,048, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x72E70.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 19 bits
- Reversed
- 46,074
- Recamán's sequence
- a(135,376) = 470,640
- Square (n²)
- 221,502,009,600
- Cube (n³)
- 104,247,705,798,144,000
- Divisor count
- 80
- σ(n) — sum of divisors
- 1,526,688
- φ(n) — Euler's totient
- 119,808
- Sum of prime factors
- 106
Primality
Prime factorization: 2 4 × 3 × 5 × 37 × 53
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√470,640 = [686; (31, 5, 2, 10, 1, 7, 1, 1, 1, 27, 2, 1, 7, 7, 1, 84, 1, 7, 7, 1, 2, 27, 1, 1, …)]
Period length 32 — the block in parentheses repeats forever.
Representations
- In words
- four hundred seventy thousand six hundred forty
- Ordinal
- 470640th
- Binary
- 1110010111001110000
- Octal
- 1627160
- Hexadecimal
- 0x72E70
- Base64
- By5w
- One's complement
- 4,294,496,655 (32-bit)
- Scientific notation
- 4.7064 × 10⁵
- As a duration
- 470,640 s = 5 days, 10 hours, 44 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵υοχμʹ
- Chinese
- 四十七萬零六百四十
- Chinese (financial)
- 肆拾柒萬零陸佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 470640, here are decompositions:
- 13 + 470627 = 470640
- 19 + 470621 = 470640
- 31 + 470609 = 470640
- 41 + 470599 = 470640
- 43 + 470597 = 470640
- 47 + 470593 = 470640
- 61 + 470579 = 470640
- 89 + 470551 = 470640
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.7.46.112.
- Address
- 0.7.46.112
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.7.46.112
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 470,640 and was likely granted around 1891.
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°.