21609399240

Names of 21609399240

• Cardinal: 21609399240 can be written as Twenty-one billion, six hundred nine million, three hundred ninety-nine thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.160939924 × 10¹⁰

Factors of 21609399240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 139955

Divisors of 21609399240

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 13 15 18 20 22 24 26 27 30 33 36 39 40 44 45 52 54 55 60 65 66 72 78 88 90 99 104 108 110 117 120 130 132 135 143 156 165 180 195 198 216 220 234 260 264 270 286 297 312 330 351 360 390 396 429 440 468 495 520 540 572 585 594 660 702 715 780 792 858 936 990 1080 1144 1170 1188 1287 1320 1404 1430 1485 1560 1716 1755 1980 2145 2340 2376 2574 2808 2860 2970 3432 3510 3861 3960 4290 4680 5148 5720 5940 6435 7020 7722 8580 10296 11880 12870 14040 15444 17160 19305 25740 30888 38610 51480 77220 139921 154440 279842 419763 559684 699605 839526 1119368 1259289 1399210 1539131 1679052 1818973 2098815 2518578 2798420 3078262 3358104 3637946 3777867 4197630 4617393 5037156 5456919 5596840 6156524 6296445 7275892 7555734 7695655 8395260 9094865 9234786 10074312 10913838 12313048 12592890 13852179 14551784 15111468 15391310 16370757 16790520 18189730 18469572 18889335 20008703 21827676 23086965 25185780 27284595 27704358 30222936 30782620 32741514 36379460 36939144 37778670 40017406 41556537 43655352 46173930 49112271 50371560 54569190 55408716 60026109 61565240 65483028 69260895 72758920 75557340 80034812 81853785 83113074 92347860 98224542 100043515 109138380 110817432 120052218 130966056 138521790 151114680 160069624 163707570 166226148 180078327 184695720 196449084 200087030 207782685 218276760 240104436 245561355 277043580 300130545 327415140 332452296 360156654 392898168 400174060 415565370 480208872 491122710 540234981 554087160 600261090 654830280 720313308 800348120 831130740 900391635 982245420 1080469962 1200522180 1440626616 1662261480 1800783270 1964490840 2160939924 2401044360 2701174905 3601566540 4321879848 5402349810 7203133080 10804699620 21609399240
• Sum of all divisors σ(n): 84624825600
• Sum of proper divisors (its aliquot sum) s(n): 63015426360
• 21609399240 is an abundant number, because the sum of its proper divisors (63015426360) is greater than itself. Its abundance is 41406027120

Bases of 21609399240

• Binary: 10100001000000001010100001111001000₂
• Hexadecimal: 0x5080543C8
• Base-36: 9XDOF60

Squares and roots of 21609399240

• 21609399240 squared (21609399240²) is 466966135513712577600
• 21609399240 cubed (21609399240³) is 10090857653875757583967881024000
• The square root of 21609399240 is 147001.3579529113
• The cube root of 21609399240 is 2785.3571990639

Scales and comparisons

• 21,609,399,240 seconds is equal to 687 years, 5 weeks, 5 days, 18 hours, 54 minutes.
• To count from 1 to 21,609,399,240 would take you about one thousand, three hundred seventy-four 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 21609399240 cubic inches would be around 232.1 feet tall.

Recreational maths with 21609399240

• 21609399240 backwards is 04299390612
• 21609399240 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21609399240's digits is 45
• More coming soon!