21198091640

Names of 21198091640

• Cardinal: 21198091640 can be written as Twenty-one billion, one hundred ninety-eight million, ninety-one thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.119809164 × 10¹⁰

Factors of 21198091640

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 649

Divisors of 21198091640

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 8 10 11 20 22 40 44 55 88 110 121 220 242 440 484 605 631 968 1210 1262 1331 2420 2524 2662 3155 4840 5048 5324 6310 6655 6941 10648 12620 13310 13882 25240 26620 27764 34705 53240 55528 69410 76351 138820 152702 277640 305404 381755 398161 610808 763510 796322 839861 1527020 1592644 1679722 1990805 3054040 3185288 3359444 3981610 4199305 4379771 6718888 7963220 8398610 8759542 15926440 16797220 17519084 21898855 33594440 35038168 43797710 48177481 87595420 96354962 175190840 192709924 240887405 385419848 481774810 529952291 963549620 1059904582 1927099240 2119809164 2649761455 4239618328 5299522910 10599045820 21198091640
• Sum of all divisors σ(n): 52544965680
• Sum of proper divisors (its aliquot sum) s(n): 31346874040
• 21198091640 is an abundant number, because the sum of its proper divisors (31346874040) is greater than itself. Its abundance is 10148782400

Bases of 21198091640

• Binary: 10011101111100000010011010101111000₂
• Hexadecimal: 0x4EF813578
• Base-36: 9QKSO6W

Squares and roots of 21198091640

• 21198091640 squared (21198091640²) is 449359089177837889600
• 21198091640 cubed (21198091640³) is 9525555151658739840805002944000
• The square root of 21198091640 is 145595.6443029805
• The cube root of 21198091640 is 2767.5719594807

Scales and comparisons

• 21,198,091,640 seconds is equal to 674 years, 1 week, 5 days, 6 hours, 47 minutes, 20 seconds.
• To count from 1 to 21,198,091,640 would take you about one thousand, three hundred forty-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 21198091640 cubic inches would be around 230.6 feet tall.

Recreational maths with 21198091640

• 21198091640 backwards is 04619089112
• The number of decimal digits it has is: 11
• The sum of 21198091640's digits is 41
• More coming soon!