21048720
21,048,720 is an even composite number composed of seven prime numbers multiplied together.
21048720 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 21048720:
24 × 3 × 5 × 7 × 11 × 17 × 67
(2 × 2 × 2 × 2 × 3 × 5 × 7 × 11 × 17 × 67)See below for interesting mathematical facts about the number 21048720 from the Numbermatics database.
Names of 21048720
- Cardinal: 21048720 can be written as Twenty-one million, forty-eight thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.104872 × 107
Factors of 21048720
Divisors of 21048720
- Number of divisors d(n): 320
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Complete list of divisors:
1 2 3 4 5 6 7 8 10 11 12 14 15 16 17 20 21 22 24 28 30 33 34 35 40 42 44 48 51 55 56 60 66 67 68 70 77 80 84 85 88 102 105 110 112 119 120 132 134 136 140 154 165 168 170 176 187 201 204 210 220 231 238 240 255 264 268 272 280 308 330 335 336 340 357 374 385 402 408 420 440 462 469 476 510 528 536 560 561 595 616 660 670 680 714 737 748 770 804 816 840 880 924 935 938 952 1005 1020 1072 1122 1139 1155 1190 1232 1309 1320 1340 1360 1407 1428 1474 1496 1540 1608 1680 1785 1848 1870 1876 1904 2010 2040 2211 2244 2278 2310 2345 2380 2618 2640 2680 2805 2814 2856 2948 2992 3080 3216 3417 3570 3685 3696 3740 3752 3927 4020 4080 4422 4488 4556 4620 4690 4760 5159 5236 5360 5610 5628 5695 5712 5896 6160 6545 6834 7035 7140 7370 7480 7504 7854 7973 8040 8844 8976 9112 9240 9380 9520 10318 10472 11055 11220 11256 11390 11792 12529 13090 13668 14070 14280 14740 14960 15477 15708 15946 16080 17085 17688 18224 18480 18760 19635 20636 20944 22110 22440 22512 22780 23919 25058 25795 26180 27336 28140 28560 29480 30954 31416 31892 34170 35376 37520 37587 39270 39865 41272 44220 44880 45560 47838 50116 51590 52360 54672 56280 58960 61908 62645 62832 63784 68340 75174 77385 78540 79730 82544 87703 88440 91120 95676 100232 103180 104720 112560 119595 123816 125290 127568 136680 150348 154770 157080 159460 175406 176880 187935 191352 200464 206360 239190 247632 250580 263109 273360 300696 309540 314160 318920 350812 375870 382704 412720 438515 478380 501160 526218 601392 619080 637840 701624 751740 877030 956760 1002320 1052436 1238160 1315545 1403248 1503480 1754060 1913520 2104872 2631090 3006960 3508120 4209744 5262180 7016240 10524360 21048720
- Sum of all divisors σ(n): 87422976
- Sum of proper divisors (its aliquot sum) s(n): 66374256
- 21048720 is an abundant number, because the sum of its proper divisors (66374256) is greater than itself. Its abundance is 45325536
Bases of 21048720
- Binary: 10100000100101101100100002
- Hexadecimal: 0x1412D90
- Base-36: CJ5AO
Squares and roots of 21048720
- 21048720 squared (210487202) is 443048613638400
- 21048720 cubed (210487203) is 9325606214862862848000
-
The
square root of 21048720 is 4587.8884031763 -
The
cube root of 21048720 is 276.1056096573
Scales and comparisons
How big is 21048720?- 21,048,720 seconds is equal to 34 weeks, 5 days, 14 hours, 52 minutes.
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To count from 1 to 21,048,720 would take you about ten hours!
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 21048720 cubic inches would be around 23 feet tall.
Recreational maths with 21048720
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