21309960
21,309,960 is an even composite number composed of six prime numbers multiplied together.
21309960 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 21309960:
23 × 3 × 5 × 7 × 23 × 1103
(2 × 2 × 2 × 3 × 5 × 7 × 23 × 1103)See below for interesting mathematical facts about the number 21309960 from the Numbermatics database.
Names of 21309960
- Cardinal: 21309960 can be written as Twenty-one million, three hundred nine thousand, nine hundred sixty.
Scientific notation
- Scientific notation: 2.130996 × 107
Factors of 21309960
Divisors of 21309960
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 14 15 20 21 23 24 28 30 35 40 42 46 56 60 69 70 84 92 105 115 120 138 140 161 168 184 210 230 276 280 322 345 420 460 483 552 644 690 805 840 920 966 1103 1288 1380 1610 1932 2206 2415 2760 3220 3309 3864 4412 4830 5515 6440 6618 7721 8824 9660 11030 13236 15442 16545 19320 22060 23163 25369 26472 30884 33090 38605 44120 46326 50738 61768 66180 76107 77210 92652 101476 115815 126845 132360 152214 154420 177583 185304 202952 231630 253690 304428 308840 355166 380535 463260 507380 532749 608856 710332 761070 887915 926520 1014760 1065498 1420664 1522140 1775830 2130996 2663745 3044280 3551660 4261992 5327490 7103320 10654980 21309960
- Sum of all divisors σ(n): 76308480
- Sum of proper divisors (its aliquot sum) s(n): 54998520
- 21309960 is an abundant number, because the sum of its proper divisors (54998520) is greater than itself. Its abundance is 33688560
Bases of 21309960
- Binary: 10100010100101010000010002
- Hexadecimal: 0x1452A08
- Base-36: COQVC
Squares and roots of 21309960
- 21309960 squared (213099602) is 454114395201600
- 21309960 cubed (213099603) is 9677159597170287936000
-
The
square root of 21309960 is 4616.2712225345 -
The
cube root of 21309960 is 277.2431842001
Scales and comparisons
How big is 21309960?- 21,309,960 seconds is equal to 35 weeks, 1 day, 15 hours, 26 minutes.
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To count from 1 to 21,309,960 would take you about five 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 21309960 cubic inches would be around 23.1 feet tall.
Recreational maths with 21309960
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The information we have on file for 21309960 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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