21189720
21,189,720 is an even composite number composed of five prime numbers multiplied together.
21189720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21189720:
23 × 3 × 5 × 29 × 6089
(2 × 2 × 2 × 3 × 5 × 29 × 6089)See below for interesting mathematical facts about the number 21189720 from the Numbermatics database.
Names of 21189720
- Cardinal: 21189720 can be written as Twenty-one million, one hundred eighty-nine thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.118972 × 107
Factors of 21189720
Divisors of 21189720
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 20 24 29 30 40 58 60 87 116 120 145 174 232 290 348 435 580 696 870 1160 1740 3480 6089 12178 18267 24356 30445 36534 48712 60890 73068 91335 121780 146136 176581 182670 243560 353162 365340 529743 706324 730680 882905 1059486 1412648 1765810 2118972 2648715 3531620 4237944 5297430 7063240 10594860 21189720
- Sum of all divisors σ(n): 65772000
- Sum of proper divisors (its aliquot sum) s(n): 44582280
- 21189720 is an abundant number, because the sum of its proper divisors (44582280) is greater than itself. Its abundance is 23392560
Bases of 21189720
- Binary: 10100001101010100010110002
- Hexadecimal: 0x1435458
- Base-36: CM63C
Squares and roots of 21189720
- 21189720 squared (211897202) is 449004233678400
- 21189720 cubed (211897203) is 9514273990459866048000
-
The
square root of 21189720 is 4603.2293012623 -
The
cube root of 21189720 is 276.7207584435
Scales and comparisons
How big is 21189720?- 21,189,720 seconds is equal to 35 weeks, 6 hours, 2 minutes.
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To count from 1 to 21,189,720 would take you about three 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 21189720 cubic inches would be around 23.1 feet tall.
Recreational maths with 21189720
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The information we have on file for 21189720 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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