21283125840

Names of 21283125840

• Cardinal: 21283125840 can be written as Twenty-one billion, two hundred eighty-three million, one hundred twenty-five thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.128312584 × 10¹⁰

Factors of 21283125840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 364947

Divisors of 21283125840

• Number of divisors d(n): 140
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 72 80 81 90 108 120 135 144 162 180 216 240 243 270 324 360 405 432 486 540 648 720 729 810 972 1080 1215 1296 1458 1620 1944 2160 2430 2916 3240 3645 3888 4860 5832 6480 7290 9720 11664 14580 19440 29160 58320 364937 729874 1094811 1459748 1824685 2189622 2919496 3284433 3649370 4379244 5474055 5838992 6568866 7298740 8758488 9853299 10948110 13137732 14597480 16422165 17516976 19706598 21896220 26275464 29194960 29559897 32844330 39413196 43792440 49266495 52550928 59119794 65688660 78826392 87584880 88679691 98532990 118239588 131377320 147799485 157652784 177359382 197065980 236479176 262754640 266039073 295598970 354718764 394131960 443398455 472958352 532078146 591197940 709437528 788263920 886796910 1064156292 1182395880 1330195365 1418875056 1773593820 2128312584 2364791760 2660390730 3547187640 4256625168 5320781460 7094375280 10641562920 21283125840
• Sum of all divisors σ(n): 74191165524
• Sum of proper divisors (its aliquot sum) s(n): 52908039684
• 21283125840 is an abundant number, because the sum of its proper divisors (52908039684) is greater than itself. Its abundance is 31624913844

Bases of 21283125840

• Binary: 10011110100100100101011101001010000₂
• Hexadecimal: 0x4F492BA50
• Base-36: 9RZF900

Squares and roots of 21283125840

• 21283125840 squared (21283125840²) is 452971445521275705600
• 21283125840 cubed (21283125840³) is 9640648276956015239619592704000
• The square root of 21283125840 is 145887.3738196695
• The cube root of 21283125840 is 2771.2676425895

Scales and comparisons

• 21,283,125,840 seconds is equal to 676 years, 38 weeks, 2 days, 11 hours, 24 minutes.
• To count from 1 to 21,283,125,840 would take you about one thousand, three hundred fifty-three 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 21283125840 cubic inches would be around 230.9 feet tall.

Recreational maths with 21283125840

• 21283125840 backwards is 04852138212
• 21283125840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21283125840's digits is 36
• More coming soon!