21684040415507428

Names of 21684040415507428

• Cardinal: 21684040415507428 can be written as Twenty-one quadrillion, six hundred eighty-four trillion, forty billion, four hundred fifteen million, five hundred seven thousand, four hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1684040415507428 × 10¹⁶

Factors of 21684040415507428

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 783

Divisors of 21684040415507428

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 4 7 14 28 31 49 62 98 124 196 217 343 434 686 743 868 961 1372 1486 1519 1922 2972 3038 3844 5201 6076 6727 10402 10633 13454 20804 21266 23033 26908 29791 36407 42532 46066 47089 59582 72814 92132 94178 119164 145628 161231 188356 208537 254849 322462 329623 417074 509698 552049 644924 659246 714023 834148 923521 1019396 1104098 1128617 1318492 1428046 1459759 1847042 2208196 2257234 2856092 2919518 3694084 3864343 4514468 4998161 5839036 6464647 7728686 7900319 9996322 10218313 12929294 15457372 15800638 17113519 19992644 20436626 22134713 25858588 27050401 28629151 31601276 34227038 34987127 40873252 44269426 45252529 54100802 57258302 68454076 69974254 88538852 90505058 108201604 114516604 119794633 139948508 154942991 181010116 189352807 200404057 239589266 244909889 309885982 316767703 378705614 400808114 479178532 489819778 530519089 619771964 633535406 686176103 757411228 801616228 838562431 979639556 1061038178 1084600937 1267070812 1372352206 1402828399 1677124862 2122076356 2169201874 2744704412 2805656798 3354249724 3713633623 4338403748 4803232721 5611313596 5869937017 7427267246 7592206559 9606465442 9819798793 11739874034 14854534492 15184413118 16446091759 19212930884 19639597586 21271459193 23479748068 25995435361 30368826236 32892183518 33622629047 39279195172 42542918386 51990870722 65784367036 67245258094 85085836772 103981741444 115122642313 134490516188 148900214351 181968047527 230245284626 235358403329 297800428702 363936095054 460490569252 470716806658 509828844529 595600857404 727872190108 805858496191 941433613316 1019657689058 1042301500457 1611716992382 2039315378116 2084603000914 3223433984764 3568801911703 4169206001828 5641009473337 7137603823406 7296110503199 11282018946674 14275207646812 14592221006398 15804694180399 22564037893348 24981613381921 29184442012796 31609388360798 49963226763842 63218776721596 99926453527684 110632859262793 174871293673447 221265718525586 349742587346894 442531437051172 699485174693788 774430014839551 1548860029679102 3097720059358204 5421010103876857 10842020207753714 21684040415507428
• Sum of all divisors σ(n): 45789876699302400
• Sum of proper divisors (its aliquot sum) s(n): 24105836283794972
• 21684040415507428 is an abundant number, because the sum of its proper divisors (24105836283794972) is greater than itself. Its abundance is 2421795868287544

Bases of 21684040415507428

• Binary: 1001101000010011000010100010110010000101111001111100100₂
• Hexadecimal: 0x4D09851642F3E4
• Base-36: 5XICMNA26LG

Squares and roots of 21684040415507428

• 21684040415507428 squared (21684040415507428²) is 470197608741359550744662723175184
• 21684040415507428 cubed (21684040415507428³) is 10195783951222589212601920428989909697356697266752
• The square root of 21684040415507428 is 147255018.3033075039
• The cube root of 21684040415507428 is 278856.0487584087

Scales and comparisons

• 21,684,040,415,507,428 seconds is equal to 689,485,412 years, 3 weeks, 5 days, 7 hours, 10 minutes, 28 seconds.
• To count from 1 to 21,684,040,415,507,428 would take you about two billion, sixty-eight million, four hundred fifty-six thousand, two hundred thirty-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 21684040415507428 cubic inches would be around 23238 feet tall.

Recreational maths with 21684040415507428

• 21684040415507428 backwards is 82470551404048612
• The number of decimal digits it has is: 17
• The sum of 21684040415507428's digits is 61
• More coming soon!