21040565488

Names of 21040565488

• Cardinal: 21040565488 can be written as Twenty-one billion, forty million, five hundred sixty-five thousand, four hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1040565488 × 10¹⁰

Factors of 21040565488

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 131279

Divisors of 21040565488

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 4 8 16 79 127 158 254 316 508 632 1016 1264 2032 10033 20066 40132 80264 131071 160528 262142 524284 1048568 2097136 10354609 16646017 20709218 33292034 41418436 66584068 82836872 133168136 165673744 266336272 1315035343 2630070686 5260141372 10520282744 21040565488
• Sum of all divisors σ(n): 41607495680
• Sum of proper divisors (its aliquot sum) s(n): 20566930192
• 21040565488 is a deficient number, because the sum of its proper divisors (20566930192) is less than itself. Its deficiency is 473635296

Bases of 21040565488

• Binary: 10011100110000111011000110011110000₂
• Hexadecimal: 0x4E61D8CF0
• Base-36: 9NZ0C8G

Squares and roots of 21040565488

• 21040565488 squared (21040565488²) is 442705396054816678144
• 21040565488 cubed (21040565488³) is 9314771877582347154323450294272
• The square root of 21040565488 is 145053.6641660595
• The cube root of 21040565488 is 2760.6994957423

Scales and comparisons

• 21,040,565,488 seconds is equal to 669 years, 1 week, 2 days, 1 hour, 31 minutes, 28 seconds.
• To count from 1 to 21,040,565,488 would take you about one thousand, three hundred thirty-eight 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 21040565488 cubic inches would be around 230.1 feet tall.

Recreational maths with 21040565488

• 21040565488 backwards is 88456504012
• The number of decimal digits it has is: 11
• The sum of 21040565488's digits is 43
• More coming soon!