21147984
21,147,984 is an even composite number composed of five prime numbers multiplied together.
21147984 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred eighty divisors.
Prime factorization of 21147984:
24 × 32 × 11 × 132 × 79
(2 × 2 × 2 × 2 × 3 × 3 × 11 × 13 × 13 × 79)See below for interesting mathematical facts about the number 21147984 from the Numbermatics database.
Names of 21147984
- Cardinal: 21147984 can be written as Twenty-one million, one hundred forty-seven thousand, nine hundred eighty-four.
Scientific notation
- Scientific notation: 2.1147984 × 107
Factors of 21147984
Divisors of 21147984
- Number of divisors d(n): 180
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Complete list of divisors:
1 2 3 4 6 8 9 11 12 13 16 18 22 24 26 33 36 39 44 48 52 66 72 78 79 88 99 104 117 132 143 144 156 158 169 176 198 208 234 237 264 286 312 316 338 396 429 468 474 507 528 572 624 632 676 711 792 858 869 936 948 1014 1027 1144 1264 1287 1352 1422 1521 1584 1716 1738 1859 1872 1896 2028 2054 2288 2574 2607 2704 2844 3042 3081 3432 3476 3718 3792 4056 4108 5148 5214 5577 5688 6084 6162 6864 6952 7436 7821 8112 8216 9243 10296 10428 11154 11297 11376 12168 12324 13351 13904 14872 15642 16432 16731 18486 20592 20856 22308 22594 24336 24648 26702 29744 31284 33462 33891 36972 40053 41712 44616 45188 49296 53404 62568 66924 67782 73944 80106 89232 90376 101673 106808 120159 125136 133848 135564 146861 147888 160212 180752 203346 213616 240318 267696 271128 293722 320424 406692 440583 480636 542256 587444 640848 813384 881166 961272 1174888 1321749 1626768 1762332 1922544 2349776 2643498 3524664 5286996 7049328 10573992 21147984
- Sum of all divisors σ(n): 70799040
- Sum of proper divisors (its aliquot sum) s(n): 49651056
- 21147984 is an abundant number, because the sum of its proper divisors (49651056) is greater than itself. Its abundance is 28503072
Bases of 21147984
- Binary: 10100001010110001010100002
- Hexadecimal: 0x142B150
- Base-36: CL9W0
Squares and roots of 21147984
- 21147984 squared (211479842) is 447237227264256
- 21147984 cubed (211479843) is 9458165726388849659904
-
The
square root of 21147984 is 4598.6937275709 -
The
cube root of 21147984 is 276.5389594633
Scales and comparisons
How big is 21147984?- 21,147,984 seconds is equal to 34 weeks, 6 days, 18 hours, 26 minutes, 24 seconds.
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To count from 1 to 21,147,984 would take you about three days!
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 21147984 cubic inches would be around 23 feet tall.
Recreational maths with 21147984
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The information we have on file for 21147984 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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