21313920
21,313,920 is an even composite number composed of five prime numbers multiplied together.
21313920 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 21313920:
27 × 3 × 5 × 17 × 653
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 17 × 653)See below for interesting mathematical facts about the number 21313920 from the Numbermatics database.
Names of 21313920
- Cardinal: 21313920 can be written as Twenty-one million, three hundred thirteen thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.131392 × 107
Factors of 21313920
Divisors of 21313920
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 32 34 40 48 51 60 64 68 80 85 96 102 120 128 136 160 170 192 204 240 255 272 320 340 384 408 480 510 544 640 653 680 816 960 1020 1088 1306 1360 1632 1920 1959 2040 2176 2612 2720 3264 3265 3918 4080 5224 5440 6528 6530 7836 8160 9795 10448 10880 11101 13060 15672 16320 19590 20896 22202 26120 31344 32640 33303 39180 41792 44404 52240 55505 62688 66606 78360 83584 88808 104480 111010 125376 133212 156720 166515 177616 208960 222020 250752 266424 313440 333030 355232 417920 444040 532848 626880 666060 710464 888080 1065696 1253760 1332120 1420928 1776160 2131392 2664240 3552320 4262784 5328480 7104640 10656960 21313920
- Sum of all divisors σ(n): 72044640
- Sum of proper divisors (its aliquot sum) s(n): 50730720
- 21313920 is an abundant number, because the sum of its proper divisors (50730720) is greater than itself. Its abundance is 29416800
Bases of 21313920
- Binary: 10100010100111001100000002
- Hexadecimal: 0x1453980
- Base-36: COTXC
Squares and roots of 21313920
- 21313920 squared (213139202) is 454283185766400
- 21313920 cubed (213139203) is 9682555478770188288000
-
The
square root of 21313920 is 4616.7001202157 -
The
cube root of 21313920 is 277.2603563737
Scales and comparisons
How big is 21313920?- 21,313,920 seconds is equal to 35 weeks, 1 day, 16 hours, 32 minutes.
-
To count from 1 to 21,313,920 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 21313920 cubic inches would be around 23.1 feet tall.
Recreational maths with 21313920
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The information we have on file for 21313920 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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