21290724
21,290,724 is an even composite number composed of six prime numbers multiplied together.
21290724 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21290724:
22 × 32 × 7 × 13 × 67 × 97
(2 × 2 × 3 × 3 × 7 × 13 × 67 × 97)See below for interesting mathematical facts about the number 21290724 from the Numbermatics database.
Names of 21290724
- Cardinal: 21290724 can be written as Twenty-one million, two hundred ninety thousand, seven hundred twenty-four.
Scientific notation
- Scientific notation: 2.1290724 × 107
Factors of 21290724
Divisors of 21290724
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 6 7 9 12 13 14 18 21 26 28 36 39 42 52 63 67 78 84 91 97 117 126 134 156 182 194 201 234 252 268 273 291 364 388 402 468 469 546 582 603 679 804 819 871 873 938 1092 1164 1206 1261 1358 1407 1638 1742 1746 1876 2037 2412 2522 2613 2716 2814 3276 3484 3492 3783 4074 4221 5044 5226 5628 6097 6111 6499 7566 7839 8148 8442 8827 10452 11349 12194 12222 12998 15132 15678 16884 17654 18291 19497 22698 24388 24444 25996 26481 31356 35308 36582 38994 45396 45493 52962 54873 58491 73164 77988 79443 84487 90986 105924 109746 116982 136479 158886 168974 181972 219492 233964 253461 272958 317772 337948 409437 506922 545916 591409 760383 818874 1013844 1182818 1520766 1637748 1774227 2365636 3041532 3548454 5322681 7096908 10645362 21290724
- Sum of all divisors σ(n): 67919488
- Sum of proper divisors (its aliquot sum) s(n): 46628764
- 21290724 is an abundant number, because the sum of its proper divisors (46628764) is greater than itself. Its abundance is 25338040
Bases of 21290724
- Binary: 10100010011011110111001002
- Hexadecimal: 0x144DEE4
- Base-36: COC10
Squares and roots of 21290724
- 21290724 squared (212907242) is 453294928444176
- 21290724 cubed (212907243) is 9650977212104700623424
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The
square root of 21290724 is 4614.1872523771 -
The
cube root of 21290724 is 277.1597387851
Scales and comparisons
How big is 21290724?- 21,290,724 seconds is equal to 35 weeks, 1 day, 10 hours, 5 minutes, 24 seconds.
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To count from 1 to 21,290,724 would take you about five 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 21290724 cubic inches would be around 23.1 feet tall.
Recreational maths with 21290724
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The information we have on file for 21290724 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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