21144728
21,144,728 is an even composite number composed of five prime numbers multiplied together.
21144728 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 21144728:
23 × 11 × 23 × 31 × 337
(2 × 2 × 2 × 11 × 23 × 31 × 337)See below for interesting mathematical facts about the number 21144728 from the Numbermatics database.
Names of 21144728
- Cardinal: 21144728 can be written as Twenty-one million, one hundred forty-four thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.1144728 × 107
Factors of 21144728
Divisors of 21144728
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 4 8 11 22 23 31 44 46 62 88 92 124 184 248 253 337 341 506 674 682 713 1012 1348 1364 1426 2024 2696 2728 2852 3707 5704 7414 7751 7843 10447 14828 15502 15686 20894 29656 31004 31372 41788 62008 62744 83576 85261 114917 170522 229834 240281 341044 459668 480562 682088 919336 961124 1922248 2643091 5286182 10572364 21144728
- Sum of all divisors σ(n): 46725120
- Sum of proper divisors (its aliquot sum) s(n): 25580392
- 21144728 is an abundant number, because the sum of its proper divisors (25580392) is greater than itself. Its abundance is 4435664
Bases of 21144728
- Binary: 10100001010100100100110002
- Hexadecimal: 0x142A498
- Base-36: CL7DK
Squares and roots of 21144728
- 21144728 squared (211447282) is 447099522193984
- 21144728 cubed (211447283) is 9453797785721754916352
-
The
square root of 21144728 is 4598.3397003701 -
The
cube root of 21144728 is 276.5247665097
Scales and comparisons
How big is 21144728?- 21,144,728 seconds is equal to 34 weeks, 6 days, 17 hours, 32 minutes, 8 seconds.
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To count from 1 to 21,144,728 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 21144728 cubic inches would be around 23 feet tall.
Recreational maths with 21144728
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The information we have on file for 21144728 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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