21338179840

Names of 21338179840

• Cardinal: 21338179840 can be written as Twenty-one billion, three hundred thirty-eight million, one hundred seventy-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.133817984 × 10¹⁰

Factors of 21338179840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 737

Divisors of 21338179840

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 128 160 173 256 320 346 557 640 692 865 1114 1280 1384 1730 2228 2768 2785 3460 4456 5536 5570 6920 8912 11072 11140 13840 17824 22144 22280 27680 29929 35648 44288 44560 55360 59858 71296 89120 96361 110720 119716 142592 149645 178240 192722 221440 239432 299290 356480 385444 478864 481805 598580 712960 770888 957728 963610 1197160 1541776 1915456 1927220 2394320 3083552 3830912 3854440 4788640 6167104 7661824 7708880 9577280 12334208 15417760 16670453 19154560 24668416 30835520 33340906 38309120 61671040 66681812 83352265 123342080 133363624 166704530 266727248 333409060 533454496 666818120 1066908992 1333636240 2133817984 2667272480 4267635968 5334544960 10669089920 21338179840
• Sum of all divisors σ(n): 51501055284
• Sum of proper divisors (its aliquot sum) s(n): 30162875444
• 21338179840 is an abundant number, because the sum of its proper divisors (30162875444) is greater than itself. Its abundance is 8824695604

Bases of 21338179840

• Binary: 10011110111110110101100100100000000₂
• Hexadecimal: 0x4F7DAC900
• Base-36: 9SW78XS

Squares and roots of 21338179840

• 21338179840 squared (21338179840²) is 455317918884182425600
• 21338179840 cubed (21338179840³) is 9715655637525216728820219904000
• The square root of 21338179840 is 146075.9386072875
• The cube root of 21338179840 is 2773.6551052525

Scales and comparisons

• 21,338,179,840 seconds is equal to 678 years, 25 weeks, 2 days, 16 hours, 10 minutes, 40 seconds.
• To count from 1 to 21,338,179,840 would take you about one thousand, three hundred fifty-six 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 21338179840 cubic inches would be around 231.1 feet tall.

Recreational maths with 21338179840

• 21338179840 backwards is 04897183312
• The number of decimal digits it has is: 11
• The sum of 21338179840's digits is 46
• More coming soon!