21017920
21,017,920 is an even composite number composed of five prime numbers multiplied together.
21017920 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 21017920:
26 × 5 × 7 × 11 × 853
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 7 × 11 × 853)See below for interesting mathematical facts about the number 21017920 from the Numbermatics database.
Names of 21017920
- Cardinal: 21017920 can be written as Twenty-one million, seventeen thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.101792 × 107
Factors of 21017920
Divisors of 21017920
- Number of divisors d(n): 112
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Complete list of divisors:
1 2 4 5 7 8 10 11 14 16 20 22 28 32 35 40 44 55 56 64 70 77 80 88 110 112 140 154 160 176 220 224 280 308 320 352 385 440 448 560 616 704 770 853 880 1120 1232 1540 1706 1760 2240 2464 3080 3412 3520 4265 4928 5971 6160 6824 8530 9383 11942 12320 13648 17060 18766 23884 24640 27296 29855 34120 37532 46915 47768 54592 59710 65681 68240 75064 93830 95536 119420 131362 136480 150128 187660 191072 238840 262724 272960 300256 328405 375320 382144 477680 525448 600512 656810 750640 955360 1050896 1313620 1501280 1910720 2101792 2627240 3002560 4203584 5254480 10508960 21017920
- Sum of all divisors σ(n): 62471808
- Sum of proper divisors (its aliquot sum) s(n): 41453888
- 21017920 is an abundant number, because the sum of its proper divisors (41453888) is greater than itself. Its abundance is 20435968
Bases of 21017920
- Binary: 10100000010110101010000002
- Hexadecimal: 0x140B540
- Base-36: CIHJ4
Squares and roots of 21017920
- 21017920 squared (210179202) is 441752961126400
- 21017920 cubed (210179203) is 9284728396717785088000
-
The
square root of 21017920 is 4584.5305103141 -
The
cube root of 21017920 is 275.9708713921
Scales and comparisons
How big is 21017920?- 21,017,920 seconds is equal to 34 weeks, 5 days, 6 hours, 18 minutes, 40 seconds.
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To count from 1 to 21,017,920 would take you about twenty-one hours!
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 21017920 cubic inches would be around 23 feet tall.
Recreational maths with 21017920
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The information we have on file for 21017920 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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