21481460
21,481,460 is an even composite number composed of seven prime numbers multiplied together.
21481460 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 21481460:
22 × 5 × 7 × 11 × 13 × 29 × 37
(2 × 2 × 5 × 7 × 11 × 13 × 29 × 37)See below for interesting mathematical facts about the number 21481460 from the Numbermatics database.
Names of 21481460
- Cardinal: 21481460 can be written as Twenty-one million, four hundred eighty-one thousand, four hundred sixty.
Scientific notation
- Scientific notation: 2.148146 × 107
Factors of 21481460
Divisors of 21481460
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 4 5 7 10 11 13 14 20 22 26 28 29 35 37 44 52 55 58 65 70 74 77 91 110 116 130 140 143 145 148 154 182 185 203 220 259 260 286 290 308 319 364 370 377 385 406 407 455 481 518 572 580 638 715 740 754 770 812 814 910 962 1001 1015 1036 1073 1276 1295 1430 1508 1540 1595 1628 1820 1885 1924 2002 2030 2035 2146 2233 2405 2590 2639 2849 2860 3190 3367 3770 4004 4060 4070 4147 4292 4466 4810 5005 5180 5278 5291 5365 5698 6380 6734 7511 7540 8140 8294 8932 9620 10010 10556 10582 10730 11165 11396 11803 13195 13468 13949 14245 15022 16588 16835 20020 20735 21164 21460 22330 23606 26390 26455 27898 28490 29029 30044 33670 37037 37555 41470 44660 47212 52780 52910 55796 56980 58058 59015 67340 69745 74074 75110 82621 82940 97643 105820 116116 118030 139490 145145 148148 150220 153439 165242 185185 195286 236060 278980 290290 306878 330484 370370 390572 413105 488215 580580 613756 740740 767195 826210 976430 1074073 1534390 1652420 1952860 2148146 3068780 4296292 5370365 10740730 21481460
- Sum of all divisors σ(n): 64350720
- Sum of proper divisors (its aliquot sum) s(n): 42869260
- 21481460 is an abundant number, because the sum of its proper divisors (42869260) is greater than itself. Its abundance is 21387800
Bases of 21481460
- Binary: 10100011111000111111101002
- Hexadecimal: 0x147C7F4
- Base-36: CSF78
Squares and roots of 21481460
- 21481460 squared (214814602) is 461453123731600
- 21481460 cubed (214814603) is 9912686819315416136000
-
The
square root of 21481460 is 4634.8095969521 -
The
cube root of 21481460 is 277.9849378517
Scales and comparisons
How big is 21481460?- 21,481,460 seconds is equal to 35 weeks, 3 days, 15 hours, 4 minutes, 20 seconds.
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To count from 1 to 21,481,460 would take you about twenty-two 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 21481460 cubic inches would be around 23.2 feet tall.
Recreational maths with 21481460
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