21742720
21,742,720 is an even composite number composed of four prime numbers multiplied together.
21742720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21742720:
27 × 5 × 53 × 641
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 53 × 641)See below for interesting mathematical facts about the number 21742720 from the Numbermatics database.
Names of 21742720
- Cardinal: 21742720 can be written as Twenty-one million, seven hundred forty-two thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.174272 × 107
Factors of 21742720
Divisors of 21742720
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 4 5 8 10 16 20 32 40 53 64 80 106 128 160 212 265 320 424 530 640 641 848 1060 1282 1696 2120 2564 3205 3392 4240 5128 6410 6784 8480 10256 12820 16960 20512 25640 33920 33973 41024 51280 67946 82048 102560 135892 169865 205120 271784 339730 410240 543568 679460 1087136 1358920 2174272 2717840 4348544 5435680 10871360 21742720
- Sum of all divisors σ(n): 53042040
- Sum of proper divisors (its aliquot sum) s(n): 31299320
- 21742720 is an abundant number, because the sum of its proper divisors (31299320) is greater than itself. Its abundance is 9556600
Bases of 21742720
- Binary: 10100101111000100100000002
- Hexadecimal: 0x14BC480
- Base-36: CY0SG
Squares and roots of 21742720
- 21742720 squared (217427202) is 472745872998400
- 21742720 cubed (217427203) is 10278781147759771648000
-
The
square root of 21742720 is 4662.9089632975 -
The
cube root of 21742720 is 279.1073613781
Scales and comparisons
How big is 21742720?- 21,742,720 seconds is equal to 35 weeks, 6 days, 15 hours, 38 minutes, 40 seconds.
-
To count from 1 to 21,742,720 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 21742720 cubic inches would be around 23.3 feet tall.
Recreational maths with 21742720
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The information we have on file for 21742720 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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