21481768
21,481,768 is an even composite number composed of five prime numbers multiplied together.
21481768 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 21481768:
23 × 7 × 11 × 43 × 811
(2 × 2 × 2 × 7 × 11 × 43 × 811)See below for interesting mathematical facts about the number 21481768 from the Numbermatics database.
Names of 21481768
- Cardinal: 21481768 can be written as Twenty-one million, four hundred eighty-one thousand, seven hundred sixty-eight.
Scientific notation
- Scientific notation: 2.1481768 × 107
Factors of 21481768
Divisors of 21481768
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 4 7 8 11 14 22 28 43 44 56 77 86 88 154 172 301 308 344 473 602 616 811 946 1204 1622 1892 2408 3244 3311 3784 5677 6488 6622 8921 11354 13244 17842 22708 26488 34873 35684 45416 62447 69746 71368 124894 139492 244111 249788 278984 383603 488222 499576 767206 976444 1534412 1952888 2685221 3068824 5370442 10740884 21481768
- Sum of all divisors σ(n): 51448320
- Sum of proper divisors (its aliquot sum) s(n): 29966552
- 21481768 is an abundant number, because the sum of its proper divisors (29966552) is greater than itself. Its abundance is 8484784
Bases of 21481768
- Binary: 10100011111001001001010002
- Hexadecimal: 0x147C928
- Base-36: CSFFS
Squares and roots of 21481768
- 21481768 squared (214817682) is 461466356405824
- 21481768 cubed (214817683) is 9913113208115225016832
-
The
square root of 21481768 is 4634.8428236563 -
The
cube root of 21481768 is 277.9862664229
Scales and comparisons
How big is 21481768?- 21,481,768 seconds is equal to 35 weeks, 3 days, 15 hours, 9 minutes, 28 seconds.
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To count from 1 to 21,481,768 would take you about twenty-two hours!
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 21481768 cubic inches would be around 23.2 feet tall.
Recreational maths with 21481768
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The information we have on file for 21481768 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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