21136842
21,136,842 is an even composite number composed of five prime numbers multiplied together.
21136842 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 21136842:
2 × 33 × 37 × 71 × 149
(2 × 3 × 3 × 3 × 37 × 71 × 149)See below for interesting mathematical facts about the number 21136842 from the Numbermatics database.
Names of 21136842
- Cardinal: 21136842 can be written as Twenty-one million, one hundred thirty-six thousand, eight hundred forty-two.
Scientific notation
- Scientific notation: 2.1136842 × 107
Factors of 21136842
Divisors of 21136842
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 6 9 18 27 37 54 71 74 111 142 149 213 222 298 333 426 447 639 666 894 999 1278 1341 1917 1998 2627 2682 3834 4023 5254 5513 7881 8046 10579 11026 15762 16539 21158 23643 31737 33078 47286 49617 63474 70929 95211 99234 141858 148851 190422 285633 297702 391423 571266 782846 1174269 2348538 3522807 7045614 10568421 21136842
- Sum of all divisors σ(n): 49248000
- Sum of proper divisors (its aliquot sum) s(n): 28111158
- 21136842 is an abundant number, because the sum of its proper divisors (28111158) is greater than itself. Its abundance is 6974316
Bases of 21136842
- Binary: 10100001010000101110010102
- Hexadecimal: 0x14285CA
- Base-36: CL1AI
Squares and roots of 21136842
- 21136842 squared (211368422) is 446766089732964
- 21136842 cubed (211368423) is 9443224249643482259688
-
The
square root of 21136842 is 4597.4821369963 -
The
cube root of 21136842 is 276.4903852767
Scales and comparisons
How big is 21136842?- 21,136,842 seconds is equal to 34 weeks, 6 days, 15 hours, 20 minutes, 42 seconds.
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To count from 1 to 21,136,842 would take you about two 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 21136842 cubic inches would be around 23 feet tall.
Recreational maths with 21136842
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The information we have on file for 21136842 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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