21195972
21,195,972 is an even composite number composed of five prime numbers multiplied together.
21195972 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21195972:
22 × 33 × 7 × 232 × 53
(2 × 2 × 3 × 3 × 3 × 7 × 23 × 23 × 53)See below for interesting mathematical facts about the number 21195972 from the Numbermatics database.
Names of 21195972
- Cardinal: 21195972 can be written as Twenty-one million, one hundred ninety-five thousand, nine hundred seventy-two.
Scientific notation
- Scientific notation: 2.1195972 × 107
Factors of 21195972
Divisors of 21195972
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 6 7 9 12 14 18 21 23 27 28 36 42 46 53 54 63 69 84 92 106 108 126 138 159 161 189 207 212 252 276 318 322 371 378 414 477 483 529 621 636 644 742 756 828 954 966 1058 1113 1219 1242 1431 1449 1484 1587 1908 1932 2116 2226 2438 2484 2862 2898 3174 3339 3657 3703 4347 4452 4761 4876 5724 5796 6348 6678 7314 7406 8533 8694 9522 10017 10971 11109 13356 14283 14628 14812 17066 17388 19044 20034 21942 22218 25599 28037 28566 32913 33327 34132 40068 43884 44436 51198 56074 57132 65826 66654 76797 84111 99981 102396 112148 131652 133308 153594 168222 196259 199962 230391 252333 307188 336444 392518 399924 460782 504666 588777 756999 785036 921564 1009332 1177554 1513998 1766331 2355108 3027996 3532662 5298993 7065324 10597986 21195972
- Sum of all divisors σ(n): 66890880
- Sum of proper divisors (its aliquot sum) s(n): 45694908
- 21195972 is an abundant number, because the sum of its proper divisors (45694908) is greater than itself. Its abundance is 24498936
Bases of 21195972
- Binary: 10100001101101100110001002
- Hexadecimal: 0x1436CC4
- Base-36: CMAX0
Squares and roots of 21195972
- 21195972 squared (211959722) is 449269229024784
- 21195972 cubed (211959723) is 9522697998870908970048
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The
square root of 21195972 is 4603.9083396609 -
The
cube root of 21195972 is 276.7479711369
Scales and comparisons
How big is 21195972?- 21,195,972 seconds is equal to 35 weeks, 7 hours, 46 minutes, 12 seconds.
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To count from 1 to 21,195,972 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 21195972 cubic inches would be around 23.1 feet tall.
Recreational maths with 21195972
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The information we have on file for 21195972 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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