21315820896

Names of 21315820896

• Cardinal: 21315820896 can be written as Twenty-one billion, three hundred fifteen million, eight hundred twenty thousand, eight hundred ninety-six.

Scientific notation

• Scientific notation: 2.1315820896 × 10¹⁰

Factors of 21315820896

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 4972

Divisors of 21315820896

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 72 96 108 144 216 288 432 864 4967 9934 14901 19868 29802 39736 44703 59604 79472 89406 119208 134109 158944 178812 238416 268218 357624 476832 536436 715248 1072872 1430496 2145744 4291488 24671089 49342178 74013267 98684356 148026534 197368712 222039801 296053068 394737424 444079602 592106136 666119403 789474848 888159204 1184212272 1332238806 1776318408 2368424544 2664477612 3552636816 5328955224 7105273632 10657910448 21315820896
• Sum of all divisors σ(n): 62183663640
• Sum of proper divisors (its aliquot sum) s(n): 40867842744
• 21315820896 is an abundant number, because the sum of its proper divisors (40867842744) is greater than itself. Its abundance is 19552021848

Bases of 21315820896

• Binary: 10011110110100001011001110101100000₂
• Hexadecimal: 0x4F6859D60
• Base-36: 9SIW0O0

Squares and roots of 21315820896

• 21315820896 squared (21315820896²) is 454364220470350242816
• 21315820896 cubed (21315820896³) is 9685146345096642654255966683136
• The square root of 21315820896 is 145999.3866288485
• The cube root of 21315820896 is 2772.6859867811

Scales and comparisons

• 21,315,820,896 seconds is equal to 677 years, 40 weeks, 2 days, 21 hours, 21 minutes, 36 seconds.
• To count from 1 to 21,315,820,896 would take you about one thousand, three hundred fifty-five 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 21315820896 cubic inches would be around 231.1 feet tall.

Recreational maths with 21315820896

• 21315820896 backwards is 69802851312
• The number of decimal digits it has is: 11
• The sum of 21315820896's digits is 45
• More coming soon!