21679581420

Names of 21679581420

• Cardinal: 21679581420 can be written as Twenty-one billion, six hundred seventy-nine million, five hundred eighty-one thousand, four hundred twenty.

Scientific notation

• Scientific notation: 2.167958142 × 10¹⁰

Factors of 21679581420

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 196

Divisors of 21679581420

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 27 28 30 35 36 42 45 54 60 63 70 84 90 105 108 126 135 140 179 180 189 210 252 270 315 358 378 420 537 540 630 716 756 895 945 1074 1253 1260 1611 1790 1890 2148 2506 2685 3222 3580 3759 3780 4833 5012 5370 6265 6444 7518 8055 9666 10740 11277 12530 15036 16110 18795 19332 22554 24165 25060 32041 32220 33831 37590 45108 48330 56385 64082 67662 75180 96123 96660 112770 128164 135324 160205 169155 192246 224287 225540 288369 320410 338310 384492 448574 480615 576738 640820 672861 676620 865107 897148 961230 1121435 1153476 1345722 1441845 1730214 1922460 2018583 2242870 2691444 2883690 3364305 3460428 4037166 4325535 4485740 5735339 5767380 6055749 6728610 8074332 8651070 10092915 11470678 12111498 13457220 17206017 17302140 20185830 22941356 24222996 28676695 30278745 34412034 40147373 40371660 51618051 57353390 60557490 68824068 80294746 86030085 103236102 114706780 120442119 121114980 154854153 160589492 172060170 200736865 206472204 240884238 258090255 309708306 344120340 361326357 401473730 481768476 516180510 602210595 619416612 722652714 774270765 802947460 1032361020 1083979071 1204421190 1445305428 1548541530 1806631785 2167958142 2408842380 3097083060 3613263570 4335916284 5419895355 7226527140 10839790710 21679581420
• Sum of all divisors σ(n): 77516006400
• Sum of proper divisors (its aliquot sum) s(n): 55836424980
• 21679581420 is an abundant number, because the sum of its proper divisors (55836424980) is greater than itself. Its abundance is 34156843560

Bases of 21679581420

• Binary: 10100001100001101000010100011101100₂
• Hexadecimal: 0x50C3428EC
• Base-36: 9YJGO30

Squares and roots of 21679581420

• 21679581420 squared (21679581420²) is 470004250546409216400
• 21679581420 cubed (21679581420³) is 10189495417466958095582199288000
• The square root of 21679581420 is 147239.8771393131
• The cube root of 21679581420 is 2788.3693326941

Scales and comparisons

• 21,679,581,420 seconds is equal to 689 years, 17 weeks, 6 days, 1 hour, 57 minutes.
• To count from 1 to 21,679,581,420 would take you about one thousand, three hundred seventy-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 21679581420 cubic inches would be around 232.4 feet tall.

Recreational maths with 21679581420

• 21679581420 backwards is 02418597612
• 21679581420 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21679581420's digits is 45
• More coming soon!