21316720
21,316,720 is an even composite number composed of five prime numbers multiplied together.
21316720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of eighty divisors.
Prime factorization of 21316720:
24 × 5 × 41 × 67 × 97
(2 × 2 × 2 × 2 × 5 × 41 × 67 × 97)See below for interesting mathematical facts about the number 21316720 from the Numbermatics database.
Names of 21316720
- Cardinal: 21316720 can be written as Twenty-one million, three hundred sixteen thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.131672 × 107
Factors of 21316720
Divisors of 21316720
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 4 5 8 10 16 20 40 41 67 80 82 97 134 164 194 205 268 328 335 388 410 485 536 656 670 776 820 970 1072 1340 1552 1640 1940 2680 2747 3280 3880 3977 5360 5494 6499 7760 7954 10988 12998 13735 15908 19885 21976 25996 27470 31816 32495 39770 43952 51992 54940 63632 64990 79540 103984 109880 129980 159080 219760 259960 266459 318160 519920 532918 1065836 1332295 2131672 2664590 4263344 5329180 10658360 21316720
- Sum of all divisors σ(n): 52059168
- Sum of proper divisors (its aliquot sum) s(n): 30742448
- 21316720 is an abundant number, because the sum of its proper divisors (30742448) is greater than itself. Its abundance is 9425728
Bases of 21316720
- Binary: 10100010101000100011100002
- Hexadecimal: 0x1454470
- Base-36: COW34
Squares and roots of 21316720
- 21316720 squared (213167202) is 454402551558400
- 21316720 cubed (213167203) is 9686371958855976448000
-
The
square root of 21316720 is 4617.0033571571 -
The
cube root of 21316720 is 277.2724970313
Scales and comparisons
How big is 21316720?- 21,316,720 seconds is equal to 35 weeks, 1 day, 17 hours, 18 minutes, 40 seconds.
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To count from 1 to 21,316,720 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 21316720 cubic inches would be around 23.1 feet tall.
Recreational maths with 21316720
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The information we have on file for 21316720 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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