21328509972
21,328,509,972 is an even composite number composed of six prime numbers multiplied together.
21328509972 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21328509972:
22 × 3 × 7 × 11 × 4457 × 5179
(2 × 2 × 3 × 7 × 11 × 4457 × 5179)See below for interesting mathematical facts about the number 21328509972 from the Numbermatics database.
Names of 21328509972
- Cardinal: 21328509972 can be written as Twenty-one billion, three hundred twenty-eight million, five hundred nine thousand, nine hundred seventy-two.
Scientific notation
- Scientific notation: 2.1328509972 × 1010
Factors of 21328509972
Divisors of 21328509972
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 6 7 11 12 14 21 22 28 33 42 44 66 77 84 132 154 231 308 462 924 4457 5179 8914 10358 13371 15537 17828 20716 26742 31074 31199 36253 49027 53484 56969 62148 62398 72506 93597 98054 108759 113938 124796 145012 147081 170907 187194 196108 217518 227876 294162 341814 343189 374388 398783 435036 588324 683628 686378 797566 1029567 1196349 1372756 1595132 2059134 2392698 4118268 4785396 23082803 46165606 69248409 92331212 138496818 161579621 253910833 276993636 323159242 484738863 507821666 646318484 761732499 969477726 1015643332 1523464998 1777375831 1938955452 3046929996 3554751662 5332127493 7109503324 10664254986 21328509972
- Sum of all divisors σ(n): 62072478720
- Sum of proper divisors (its aliquot sum) s(n): 40743968748
- 21328509972 is an abundant number, because the sum of its proper divisors (40743968748) is greater than itself. Its abundance is 19415458776
Bases of 21328509972
- Binary: 100111101110100011100111100000101002
- Hexadecimal: 0x4F7473C14
- Base-36: 9SQFZMC
Squares and roots of 21328509972
- 21328509972 squared (213285099722) is 454905337625703440784
- 21328509972 cubed (213285099723) is 9702453029865842640276255498048
-
The
square root of 21328509972 is 146042.8360858553 -
The
cube root of 21328509972 is 2773.2360609001
Scales and comparisons
How big is 21328509972?- 21,328,509,972 seconds is equal to 678 years, 9 weeks, 2 days, 18 hours, 6 minutes, 12 seconds.
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To count from 1 to 21,328,509,972 would take you about one thousand, three hundred fifty-six 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 21328509972 cubic inches would be around 231.1 feet tall.
Recreational maths with 21328509972
- 21328509972 backwards is 27990582312
- The number of decimal digits it has is: 11
- The sum of 21328509972's digits is 48
- More coming soon!
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