21678372540

Names of 21678372540

• Cardinal: 21678372540 can be written as Twenty-one billion, six hundred seventy-eight million, three hundred seventy-two thousand, five hundred forty.

Scientific notation

• Scientific notation: 2.167837254 × 10¹⁰

Factors of 21678372540

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 11445

Divisors of 21678372540

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 5 6 9 10 11 12 15 18 20 22 30 31 33 36 44 45 55 60 62 66 90 93 99 110 124 132 155 165 180 186 198 220 279 310 330 341 372 396 465 495 558 620 660 682 930 961 990 1023 1116 1364 1395 1705 1860 1922 1980 2046 2790 2883 3069 3410 3844 4092 4805 5115 5580 5766 6138 6820 8649 9610 10230 10571 11393 11532 12276 14415 15345 17298 19220 20460 21142 22786 28830 30690 31713 34179 34596 42284 43245 45572 52855 56965 57660 61380 63426 68358 86490 95139 102537 105710 113930 125323 126852 136716 158565 170895 172980 190278 205074 211420 227860 250646 317130 341790 353183 375969 380556 410148 475695 501292 512685 626615 634260 683580 706366 751938 951390 1025370 1059549 1127907 1253230 1412732 1503876 1765915 1879845 1902780 2050740 2119098 2255814 2506460 3178647 3531830 3759690 3885013 4238196 4511628 5297745 5639535 6357294 7063660 7519380 7770026 10595490 10948673 11279070 11655039 12714588 15540052 15893235 19425065 21190980 21897346 22558140 23310078 31786470 32846019 34965117 38850130 43794692 46620156 54743365 58275195 63572940 65692038 69930234 77700260 98538057 109486730 116550390 120435403 131384076 139860468 164230095 174825585 197076114 218973460 233100780 240870806 328460190 349651170 361306209 394152228 481741612 492690285 602177015 656920380 699302340 722612418 985380570 1083918627 1204354030 1445224836 1806531045 1970761140 2167837254 2408708060 3613062090 4335674508 5419593135 7226124180 10839186270 21678372540
• Sum of all divisors σ(n): 74130913584
• Sum of proper divisors (its aliquot sum) s(n): 52452541044
• 21678372540 is an abundant number, because the sum of its proper divisors (52452541044) is greater than itself. Its abundance is 30774168504

Bases of 21678372540

• Binary: 10100001100001000011011011010111100₂
• Hexadecimal: 0x50C21B6BC
• Base-36: 9YIQRB0

Squares and roots of 21678372540

• 21678372540 squared (21678372540²) is 469951835983026051600
• 21678372540 cubed (21678372540³) is 10187790976297015863110063064000
• The square root of 21678372540 is 147235.7719441849
• The cube root of 21678372540 is 2788.3175041015

Scales and comparisons

• 21,678,372,540 seconds is equal to 689 years, 15 weeks, 6 days, 2 hours, 9 minutes.
• To count from 1 to 21,678,372,540 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 21678372540 cubic inches would be around 232.4 feet tall.

Recreational maths with 21678372540

• 21678372540 backwards is 04527387612
• 21678372540 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21678372540's digits is 45
• More coming soon!