21345856
21,345,856 is an even composite number composed of five prime numbers multiplied together.
21345856 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twelve divisors.
Prime factorization of 21345856:
26 × 7 × 29 × 31 × 53
(2 × 2 × 2 × 2 × 2 × 2 × 7 × 29 × 31 × 53)See below for interesting mathematical facts about the number 21345856 from the Numbermatics database.
Names of 21345856
- Cardinal: 21345856 can be written as Twenty-one million, three hundred forty-five thousand, eight hundred fifty-six.
Scientific notation
- Scientific notation: 2.1345856 × 107
Factors of 21345856
Divisors of 21345856
- Number of divisors d(n): 112
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Complete list of divisors:
1 2 4 7 8 14 16 28 29 31 32 53 56 58 62 64 106 112 116 124 203 212 217 224 232 248 371 406 424 434 448 464 496 742 812 848 868 899 928 992 1484 1537 1624 1643 1696 1736 1798 1856 1984 2968 3074 3248 3286 3392 3472 3596 5936 6148 6293 6496 6572 6944 7192 10759 11501 11872 12296 12586 12992 13144 13888 14384 21518 23002 23744 24592 25172 26288 28768 43036 46004 47647 49184 50344 52576 57536 86072 92008 95294 98368 100688 105152 172144 184016 190588 201376 333529 344288 368032 381176 402752 667058 688576 736064 762352 1334116 1524704 2668232 3049408 5336464 10672928 21345856
- Sum of all divisors σ(n): 52669440
- Sum of proper divisors (its aliquot sum) s(n): 31323584
- 21345856 is an abundant number, because the sum of its proper divisors (31323584) is greater than itself. Its abundance is 9977728
Bases of 21345856
- Binary: 10100010110110110010000002
- Hexadecimal: 0x145B640
- Base-36: CPIKG
Squares and roots of 21345856
- 21345856 squared (213458562) is 455645568372736
- 21345856 cubed (213458563) is 9726144689522576982016
-
The
square root of 21345856 is 4620.1575730705 -
The
cube root of 21345856 is 277.3987662013
Scales and comparisons
How big is 21345856?- 21,345,856 seconds is equal to 35 weeks, 2 days, 1 hour, 24 minutes, 16 seconds.
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To count from 1 to 21,345,856 would take you about six 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 21345856 cubic inches would be around 23.1 feet tall.
Recreational maths with 21345856
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The information we have on file for 21345856 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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