21220720
21,220,720 is an even composite number composed of five prime numbers multiplied together.
21220720 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 21220720:
24 × 5 × 19 × 23 × 607
(2 × 2 × 2 × 2 × 5 × 19 × 23 × 607)See below for interesting mathematical facts about the number 21220720 from the Numbermatics database.
Names of 21220720
- Cardinal: 21220720 can be written as Twenty-one million, two hundred twenty thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.122072 × 107
Factors of 21220720
Divisors of 21220720
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 4 5 8 10 16 19 20 23 38 40 46 76 80 92 95 115 152 184 190 230 304 368 380 437 460 607 760 874 920 1214 1520 1748 1840 2185 2428 3035 3496 4370 4856 6070 6992 8740 9712 11533 12140 13961 17480 23066 24280 27922 34960 46132 48560 55844 57665 69805 92264 111688 115330 139610 184528 223376 230660 265259 279220 461320 530518 558440 922640 1061036 1116880 1326295 2122072 2652590 4244144 5305180 10610360 21220720
- Sum of all divisors σ(n): 54282240
- Sum of proper divisors (its aliquot sum) s(n): 33061520
- 21220720 is an abundant number, because the sum of its proper divisors (33061520) is greater than itself. Its abundance is 11840800
Bases of 21220720
- Binary: 10100001111001101011100002
- Hexadecimal: 0x143CD70
- Base-36: CMU0G
Squares and roots of 21220720
- 21220720 squared (212207202) is 450318957318400
- 21220720 cubed (212207203) is 9556092503945717248000
-
The
square root of 21220720 is 4606.5952719985 -
The
cube root of 21220720 is 276.8556377407
Scales and comparisons
How big is 21220720?- 21,220,720 seconds is equal to 35 weeks, 14 hours, 38 minutes, 40 seconds.
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To count from 1 to 21,220,720 would take you about four 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 21220720 cubic inches would be around 23.1 feet tall.
Recreational maths with 21220720
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The information we have on file for 21220720 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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