21004754940
21,004,754,940 is an even composite number composed of seven prime numbers multiplied together.
21004754940 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21004754940:
22 × 32 × 5 × 13 × 17 × 31 × 17033
(2 × 2 × 3 × 3 × 5 × 13 × 17 × 31 × 17033)See below for interesting mathematical facts about the number 21004754940 from the Numbermatics database.
Names of 21004754940
- Cardinal: 21004754940 can be written as Twenty-one billion, four million, seven hundred fifty-four thousand, nine hundred forty.
Scientific notation
- Scientific notation: 2.100475494 × 1010
Factors of 21004754940
Divisors of 21004754940
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 4 5 6 9 10 12 13 15 17 18 20 26 30 31 34 36 39 45 51 52 60 62 65 68 78 85 90 93 102 117 124 130 153 155 156 170 180 186 195 204 221 234 255 260 279 306 310 340 372 390 403 442 465 468 510 527 558 585 612 620 663 765 780 806 884 930 1020 1054 1105 1116 1170 1209 1326 1395 1530 1581 1612 1860 1989 2015 2108 2210 2340 2418 2635 2652 2790 3060 3162 3315 3627 3978 4030 4420 4743 4836 5270 5580 6045 6324 6630 6851 7254 7905 7956 8060 9486 9945 10540 12090 13260 13702 14508 15810 17033 18135 18972 19890 20553 23715 24180 27404 31620 34066 34255 36270 39780 41106 47430 51099 61659 68132 68510 72540 82212 85165 94860 102198 102765 123318 137020 153297 170330 204396 205530 221429 246636 255495 289561 306594 308295 340660 411060 442858 510990 528023 579122 613188 616590 664287 766485 868683 885716 1021980 1056046 1107145 1158244 1233180 1328574 1447805 1532970 1584069 1737366 1992861 2112092 2214290 2606049 2640115 2657148 2895610 3065940 3168138 3321435 3474732 3764293 3985722 4343415 4428580 4752207 5212098 5280230 5791220 6336276 6642870 6864299 7528586 7920345 7971444 8686830 8976391 9504414 9964305 10424196 10560460 11292879 13030245 13285740 13728598 15057172 15840690 17373660 17952782 18821465 19008828 19928610 20592897 22585758 23761035 26060490 26929173 27457196 31681380 33878637 34321495 35905564 37642930 39857220 41185794 44881955 45171516 47522070 52120980 53858346 56464395 61778691 67757274 68642990 75285860 80787519 82371588 89763910 95044140 102964485 107716692 112928790 116693083 123557382 134645865 135514548 137285980 161575038 169393185 179527820 205928970 225857580 233386166 247114764 269291730 308893455 323150076 338786370 350079249 403937595 411857940 466772332 538583460 583465415 617786910 677572740 700158498 807875190 1050237747 1166930830 1235573820 1400316996 1615750380 1750396245 2100475494 2333861660 3500792490 4200950988 5251188735 7001584980 10502377470 21004754940
- Sum of all divisors σ(n): 74999748096
- Sum of proper divisors (its aliquot sum) s(n): 53994993156
- 21004754940 is an abundant number, because the sum of its proper divisors (53994993156) is greater than itself. Its abundance is 32990238216
Bases of 21004754940
- Binary: 100111000111111101100011111111111002
- Hexadecimal: 0x4E3FB1FFC
- Base-36: 9NDOSN0
Squares and roots of 21004754940
- 21004754940 squared (210047549402) is 441199730089454403600
- 21004754940 cubed (210047549403) is 9267292210123134025921853784000
-
The
square root of 21004754940 is 144930.1726349623 -
The
cube root of 21004754940 is 2759.1323911259
Scales and comparisons
How big is 21004754940?- 21,004,754,940 seconds is equal to 667 years, 46 weeks, 14 hours, 9 minutes.
-
To count from 1 to 21,004,754,940 would take you about one thousand, three hundred thirty-five 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 21004754940 cubic inches would be around 229.9 feet tall.
Recreational maths with 21004754940
- 21004754940 backwards is 04945740012
- 21004754940 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21004754940's digits is 36
- More coming soon!
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