21387411710

Names of 21387411710

• Cardinal: 21387411710 can be written as Twenty-one billion, three hundred eighty-seven million, four hundred eleven thousand, seven hundred ten.

Scientific notation

• Scientific notation: 2.138741171 × 10¹⁰

Factors of 21387411710

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 67

Divisors of 21387411710

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 5 7 10 14 35 49 53 70 98 106 245 265 343 371 490 530 686 742 1715 1855 2401 2597 3430 3710 4802 5194 12005 12985 16807 18179 24010 25970 33614 36358 84035 90895 117649 127253 168070 181790 235298 254506 588245 636265 823543 890771 1176490 1272530 1647086 1781542 4117715 4453855 5764801 6235397 8235430 8907710 11529602 12470794 28824005 31176985 40353607 43647779 57648010 62353970 80707214 87295558 201768035 218238895 305534453 403536070 436477790 611068906 1527672265 2138741171 3055344530 4277482342 10693705855 21387411710
• Sum of all divisors σ(n): 45760990176
• Sum of proper divisors (its aliquot sum) s(n): 24373578466
• 21387411710 is an abundant number, because the sum of its proper divisors (24373578466) is greater than itself. Its abundance is 2986166756

Bases of 21387411710

• Binary: 10011111010110010100000000011111110₂
• Hexadecimal: 0x4FACA00FE
• Base-36: 9TPIGHQ

Squares and roots of 21387411710

• 21387411710 squared (21387411710²) is 457421379653045124100
• 21387411710 cubed (21387411710³) is 9783059371595893024334743211000
• The square root of 21387411710 is 146244.3561646055
• The cube root of 21387411710 is 2775.7866107563

Scales and comparisons

• 21,387,411,710 seconds is equal to 680 years, 2 weeks, 5 days, 11 hours, 41 minutes, 50 seconds.
• To count from 1 to 21,387,411,710 would take you about one thousand, three hundred sixty 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 21387411710 cubic inches would be around 231.3 feet tall.

Recreational maths with 21387411710

• 21387411710 backwards is 01711478312
• 21387411710 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21387411710's digits is 35
• More coming soon!