21429185984

Names of 21429185984

• Cardinal: 21429185984 can be written as Twenty-one billion, four hundred twenty-nine million, one hundred eighty-five thousand, nine hundred eighty-four.

Scientific notation

• Scientific notation: 2.1429185984 × 10¹⁰

Factors of 21429185984

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 635403

Divisors of 21429185984

• Number of divisors d(n): 56
• Complete list of divisors:
  1 2 4 8 16 17 31 32 34 62 64 68 124 136 248 272 496 527 544 992 1054 1088 1984 2108 4216 8432 16864 33728 635353 1270706 2541412 5082824 10165648 10801001 19695943 20331296 21602002 39391886 40662592 43204004 78783772 86408008 157567544 172816016 315135088 334831031 345632032 630270176 669662062 691264064 1260540352 1339324124 2678648248 5357296496 10714592992 21429185984
• Sum of all divisors σ(n): 46477415808
• Sum of proper divisors (its aliquot sum) s(n): 25048229824
• 21429185984 is an abundant number, because the sum of its proper divisors (25048229824) is greater than itself. Its abundance is 3619043840

Bases of 21429185984

• Binary: 10011111101010001110110110111000000₂
• Hexadecimal: 0x4FD476DC0
• Base-36: 9UEDTQ8

Squares and roots of 21429185984

• 21429185984 squared (21429185984²) is 459210011936862048256
• 21429185984 cubed (21429185984³) is 9840496751509876897429006843904
• The square root of 21429185984 is 146387.1100336365
• The cube root of 21429185984 is 2777.5926740261

Scales and comparisons

• 21,429,185,984 seconds is equal to 681 years, 19 weeks, 5 days, 23 hours, 39 minutes, 44 seconds.
• To count from 1 to 21,429,185,984 would take you about one thousand, three hundred sixty-two 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 21429185984 cubic inches would be around 231.5 feet tall.

Recreational maths with 21429185984

• 21429185984 backwards is 48958192412
• The number of decimal digits it has is: 11
• The sum of 21429185984's digits is 53
• More coming soon!