21623218920

Names of 21623218920

• Cardinal: 21623218920 can be written as Twenty-one billion, six hundred twenty-three million, two hundred eighteen thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.162321892 × 10¹⁰

Factors of 21623218920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 82403

Divisors of 21623218920

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 72 81 90 108 120 135 162 180 216 243 270 324 360 405 486 540 648 729 810 972 1080 1215 1458 1620 1944 2187 2430 2916 3240 3645 4374 4860 5832 6561 7290 8748 9720 10935 13122 14580 17496 21870 26244 29160 32805 43740 52488 65610 82393 87480 131220 164786 247179 262440 329572 411965 494358 659144 741537 823930 988716 1235895 1483074 1647860 1977432 2224611 2471790 2966148 3295720 3707685 4449222 4943580 5932296 6673833 7415370 8898444 9887160 11123055 13347666 14830740 17796888 20021499 22246110 26695332 29661480 33369165 40042998 44492220 53390664 60064497 66738330 80085996 88984440 100107495 120128994 133476660 160171992 180193491 200214990 240257988 266953320 300322485 360386982 400429980 480515976 540580473 600644970 720773964 800859960 900967455 1081160946 1201289940 1441547928 1801934910 2162321892 2402579880 2702902365 3603869820 4324643784 5405804730 7207739640 10811609460 21623218920
• Sum of all divisors σ(n): 72975541860
• Sum of proper divisors (its aliquot sum) s(n): 51352322940
• 21623218920 is an abundant number, because the sum of its proper divisors (51352322940) is greater than itself. Its abundance is 29729104020

Bases of 21623218920

• Binary: 10100001000110110000010001011101000₂
• Hexadecimal: 0x508D822E8
• Base-36: 9XLWMI0

Squares and roots of 21623218920

• 21623218920 squared (21623218920²) is 467563596462245966400
• 21623218920 cubed (21623218920³) is 10110230005325682046354164288000
• The square root of 21623218920 is 147048.3557201507
• The cube root of 21623218920 is 2785.9508380019

Scales and comparisons

• 21,623,218,920 seconds is equal to 687 years, 28 weeks, 4 days, 17 hours, 42 minutes.
• To count from 1 to 21,623,218,920 would take you about one thousand, three hundred seventy-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 21623218920 cubic inches would be around 232.2 feet tall.

Recreational maths with 21623218920

• 21623218920 backwards is 02981232612
• 21623218920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21623218920's digits is 36
• More coming soon!