21640320800

Names of 21640320800

• Cardinal: 21640320800 can be written as Twenty-one billion, six hundred forty million, three hundred twenty thousand, eight hundred.

Scientific notation

• Scientific notation: 2.16403208 × 10¹⁰

Factors of 21640320800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 757

Divisors of 21640320800

• Number of divisors d(n): 162
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 49 50 56 70 80 98 100 112 140 160 175 196 200 224 245 280 350 392 400 490 560 700 743 784 800 980 1120 1225 1400 1486 1568 1960 2450 2800 2972 3715 3920 4900 5201 5600 5944 7430 7840 9800 10402 11888 14860 18575 19600 20804 23776 26005 29720 36407 37150 39200 41608 52010 59440 72814 74300 83216 104020 118880 130025 145628 148600 166432 182035 208040 260050 291256 297200 364070 416080 520100 552049 582512 594400 728140 832160 910175 1040200 1104098 1165024 1456280 1820350 2080400 2208196 2760245 2912560 3640700 3864343 4160800 4416392 5520490 5825120 7281400 7728686 8832784 11040980 13801225 14562800 15457372 17665568 19321715 22081960 27050401 27602450 29125600 30914744 38643430 44163920 54100802 55204900 61829488 77286860 88327840 96608575 108201604 110409800 123658976 135252005 154573720 193217150 216403208 220819600 270504010 309147440 386434300 432806416 441639200 541008020 618294880 676260025 772868600 865612832 1082016040 1352520050 1545737200 2164032080 2705040100 3091474400 4328064160 5410080200 10820160400 21640320800
• Sum of all divisors σ(n): 61537469553
• Sum of proper divisors (its aliquot sum) s(n): 39897148753
• 21640320800 is an abundant number, because the sum of its proper divisors (39897148753) is greater than itself. Its abundance is 18256827953

Bases of 21640320800

• Binary: 10100001001110111010001011100100000₂
• Hexadecimal: 0x509DD1720
• Base-36: 9XW36E8

Squares and roots of 21640320800

• 21640320800 squared (21640320800²) is 468303484326912640000
• 21640320800 cubed (21640320800³) is 10134237632592161603174912000000
• The square root of 21640320800 is 147106.4947580495
• The cube root of 21640320800 is 2786.6851172311

Scales and comparisons

• 21,640,320,800 seconds is equal to 688 years, 4 weeks, 6 days, 16 hours, 13 minutes, 20 seconds.
• To count from 1 to 21,640,320,800 would take you about one thousand, three hundred seventy-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 21640320800 cubic inches would be around 232.2 feet tall.

Recreational maths with 21640320800

• 21640320800 backwards is 00802304612
• The number of decimal digits it has is: 11
• The sum of 21640320800's digits is 26
• More coming soon!