664495128

Names of 664495128

• Cardinal: 664495128 can be written as Six hundred sixty-four million, four hundred ninety-five thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 6.64495128 × 10⁸

Factors of 664495128

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 839025

Divisors of 664495128

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 18 22 24 33 36 44 66 72 88 99 132 198 264 396 792 839009 1678018 2517027 3356036 5034054 6712072 7551081 9229099 10068108 15102162 18458198 20136216 27687297 30204324 36916396 55374594 60408648 73832792 83061891 110749188 166123782 221498376 332247564 664495128
• Sum of all divisors σ(n): 1963283400
• Sum of proper divisors (its aliquot sum) s(n): 1298788272
• 664495128 is an abundant number, because the sum of its proper divisors (1298788272) is greater than itself. Its abundance is 634293144

Bases of 664495128

• Binary: 100111100110110110010000011000₂
• Hexadecimal: 0x279B6418
• Base-36: AZMFQ0

Squares and roots of 664495128

• 664495128 squared (664495128²) is 441553775135736384
• 664495128 cubed (664495128³) is 293410332327704365860337152
• The square root of 664495128 is 25777.8030095661
• The cube root of 664495128 is 872.6309261301

Scales and comparisons

• 664,495,128 seconds is equal to 21 years, 6 weeks, 4 days, 21 hours, 58 minutes, 48 seconds.
• To count from 1 to 664,495,128 would take you about thirty-one years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 664495128 cubic inches would be around 72.7 feet tall.

Recreational maths with 664495128

• 664495128 backwards is 821594466
• The number of decimal digits it has is: 9
• The sum of 664495128's digits is 45
• More coming soon!