21921498840

Names of 21921498840

• Cardinal: 21921498840 can be written as Twenty-one billion, nine hundred twenty-one million, four hundred ninety-eight thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.192149884 × 10¹⁰

Factors of 21921498840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 321632

Divisors of 21921498840

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 569 1138 1707 2276 2845 3414 4552 5690 6828 8535 11380 13656 17070 22760 34140 68280 321053 642106 963159 1284212 1605265 1926318 2568424 3210530 3852636 4815795 6421060 7705272 9631590 12842120 19263180 38526360 182679157 365358314 548037471 730716628 913395785 1096074942 1461433256 1826791570 2192149884 2740187355 3653583140 4384299768 5480374710 7307166280 10960749420 21921498840
• Sum of all divisors σ(n): 65880280800
• Sum of proper divisors (its aliquot sum) s(n): 43958781960
• 21921498840 is an abundant number, because the sum of its proper divisors (43958781960) is greater than itself. Its abundance is 22037283120

Bases of 21921498840

• Binary: 10100011010100111111000011011011000₂
• Hexadecimal: 0x51A9F86D8
• Base-36: A2JHSRC

Squares and roots of 21921498840

• 21921498840 squared (21921498840²) is 480552111392121345600
• 21921498840 cubed (21921498840³) is 10534422552441938862709639104000
• The square root of 21921498840 is 148059.1059003127
• The cube root of 21921498840 is 2798.7025808883

Scales and comparisons

• 21,921,498,840 seconds is equal to 697 years, 1 week, 6 days, 1 hour, 14 minutes.
• To count from 1 to 21,921,498,840 would take you about one thousand, three hundred ninety-four 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 21921498840 cubic inches would be around 233.2 feet tall.

Recreational maths with 21921498840

• 21921498840 backwards is 04889412912
• The number of decimal digits it has is: 11
• The sum of 21921498840's digits is 48
• More coming soon!