491,172
491,172 is a composite number, even.
491,172 (four hundred ninety-one thousand one hundred seventy-two) is an even 6-digit number. It is a composite number with 36 divisors, and factors as 2² × 3 × 11 × 61². Its proper divisors sum to 779,916, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x77EA4.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 504
- Digital root
- 6
- Palindrome
- No
- Bit width
- 19 bits
- Reversed
- 271,194
- Square (n²)
- 241,249,933,584
- Cube (n³)
- 118,495,212,378,320,448
- Divisor count
- 36
- σ(n) — sum of divisors
- 1,271,088
- φ(n) — Euler's totient
- 146,400
- Sum of prime factors
- 140
Primality
Prime factorization: 2 2 × 3 × 11 × 61 2
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√491,172 = [700; (1, 5, 8, 4, 2, 2, 2, 1, 1, 13, 1, 6, 2, 1, 2, 2, 4, 1, 9, 1, 7, 1, 1, 1, …)]
Representations
- In words
- four hundred ninety-one thousand one hundred seventy-two
- Ordinal
- 491172nd
- Binary
- 1110111111010100100
- Octal
- 1677244
- Hexadecimal
- 0x77EA4
- Base64
- B36k
- One's complement
- 4,294,476,123 (32-bit)
- Scientific notation
- 4.91172 × 10⁵
- As a duration
- 491,172 s = 5 days, 16 hours, 26 minutes, 12 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵υϟαροβʹ
- Chinese
- 四十九萬一千一百七十二
- Chinese (financial)
- 肆拾玖萬壹仟壹佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 491172, here are decompositions:
- 5 + 491167 = 491172
- 13 + 491159 = 491172
- 23 + 491149 = 491172
- 43 + 491129 = 491172
- 89 + 491083 = 491172
- 113 + 491059 = 491172
- 131 + 491041 = 491172
- 179 + 490993 = 491172
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.7.126.164.
- Address
- 0.7.126.164
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.7.126.164
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 491,172 and was likely granted around 1892.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 491172 first appears in π at position 408,661 of the decimal expansion (the 408,661ordinal-suffix:st 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°.