21479040
21,479,040 is an even composite number composed of five prime numbers multiplied together.
21479040 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred fifty-six divisors.
Prime factorization of 21479040:
27 × 33 × 5 × 11 × 113
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 11 × 113)See below for interesting mathematical facts about the number 21479040 from the Numbermatics database.
Names of 21479040
- Cardinal: 21479040 can be written as Twenty-one million, four hundred seventy-nine thousand and forty.
Scientific notation
- Scientific notation: 2.147904 × 107
Factors of 21479040
Divisors of 21479040
- Number of divisors d(n): 256
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 27 30 32 33 36 40 44 45 48 54 55 60 64 66 72 80 88 90 96 99 108 110 113 120 128 132 135 144 160 165 176 180 192 198 216 220 226 240 264 270 288 297 320 330 339 352 360 384 396 432 440 452 480 495 528 540 565 576 594 640 660 678 704 720 792 864 880 904 960 990 1017 1056 1080 1130 1152 1188 1243 1320 1356 1408 1440 1485 1584 1695 1728 1760 1808 1920 1980 2034 2112 2160 2260 2376 2486 2640 2712 2880 2970 3051 3168 3390 3456 3520 3616 3729 3960 4068 4224 4320 4520 4752 4972 5085 5280 5424 5760 5940 6102 6215 6336 6780 7040 7232 7458 7920 8136 8640 9040 9504 9944 10170 10560 10848 11187 11880 12204 12430 12672 13560 14464 14916 15255 15840 16272 17280 18080 18645 19008 19888 20340 21120 21696 22374 23760 24408 24860 27120 29832 30510 31680 32544 33561 36160 37290 38016 39776 40680 43392 44748 47520 48816 49720 54240 55935 59664 61020 63360 65088 67122 72320 74580 79552 81360 89496 95040 97632 99440 108480 111870 119328 122040 130176 134244 149160 159104 162720 167805 178992 190080 195264 198880 216960 223740 238656 244080 268488 298320 325440 335610 357984 390528 397760 447480 477312 488160 536976 596640 650880 671220 715968 795520 894960 976320 1073952 1193280 1342440 1431936 1789920 1952640 2147904 2386560 2684880 3579840 4295808 5369760 7159680 10739520 21479040
- Sum of all divisors σ(n): 83721600
- Sum of proper divisors (its aliquot sum) s(n): 62242560
- 21479040 is an abundant number, because the sum of its proper divisors (62242560) is greater than itself. Its abundance is 40763520
Bases of 21479040
- Binary: 10100011110111110100000002
- Hexadecimal: 0x147BE80
- Base-36: CSDC0
Squares and roots of 21479040
- 21479040 squared (214790402) is 461349159321600
- 21479040 cubed (214790403) is 9909337047035019264000
-
The
square root of 21479040 is 4634.5485217011 -
The
cube root of 21479040 is 277.9744986355
Scales and comparisons
How big is 21479040?- 21,479,040 seconds is equal to 35 weeks, 3 days, 14 hours, 24 minutes.
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To count from 1 to 21,479,040 would take you about twenty-one 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 21479040 cubic inches would be around 23.2 feet tall.
Recreational maths with 21479040
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