21381248
21,381,248 is an even composite number composed of three prime numbers multiplied together.
21381248 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21381248:
27 × 73 × 487
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 7 × 7 × 487)See below for interesting mathematical facts about the number 21381248 from the Numbermatics database.
Names of 21381248
- Cardinal: 21381248 can be written as Twenty-one million, three hundred eighty-one thousand, two hundred forty-eight.
Scientific notation
- Scientific notation: 2.1381248 × 107
Factors of 21381248
Divisors of 21381248
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 4 7 8 14 16 28 32 49 56 64 98 112 128 196 224 343 392 448 487 686 784 896 974 1372 1568 1948 2744 3136 3409 3896 5488 6272 6818 7792 10976 13636 15584 21952 23863 27272 31168 43904 47726 54544 62336 95452 109088 167041 190904 218176 334082 381808 436352 668164 763616 1336328 1527232 2672656 3054464 5345312 10690624 21381248
- Sum of all divisors σ(n): 49776000
- Sum of proper divisors (its aliquot sum) s(n): 28394752
- 21381248 is an abundant number, because the sum of its proper divisors (28394752) is greater than itself. Its abundance is 7013504
Bases of 21381248
- Binary: 10100011001000000100000002
- Hexadecimal: 0x1464080
- Base-36: CQ9VK
Squares and roots of 21381248
- 21381248 squared (213812482) is 457157766037504
- 21381248 cubed (213812483) is 9774603570773850324992
-
The
square root of 21381248 is 4623.9861591489 -
The
cube root of 21381248 is 277.5519930713
Scales and comparisons
How big is 21381248?- 21,381,248 seconds is equal to 35 weeks, 2 days, 11 hours, 14 minutes, 8 seconds.
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To count from 1 to 21,381,248 would take you about four 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 21381248 cubic inches would be around 23.1 feet tall.
Recreational maths with 21381248
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The information we have on file for 21381248 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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