21331728
21,331,728 is an even composite number composed of four prime numbers multiplied together.
What does the number 21331728 look like?
This visualization shows the relationship between its 4 prime factors (large circles) and 120 divisors.
21331728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 21331728:
24 × 33 × 11 × 672
(2 × 2 × 2 × 2 × 3 × 3 × 3 × 11 × 67 × 67)See below for interesting mathematical facts about the number 21331728 from the Numbermatics database.
Names of 21331728
- Cardinal: 21331728 can be written as Twenty-one million, three hundred thirty-one thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.1331728 × 107
Factors of 21331728
Divisors of 21331728
- Number of divisors d(n): 120
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Complete list of divisors:
1 2 3 4 6 8 9 11 12 16 18 22 24 27 33 36 44 48 54 66 67 72 88 99 108 132 134 144 176 198 201 216 264 268 297 396 402 432 528 536 594 603 737 792 804 1072 1188 1206 1474 1584 1608 1809 2211 2376 2412 2948 3216 3618 4422 4489 4752 4824 5896 6633 7236 8844 8978 9648 11792 13266 13467 14472 17688 17956 19899 26532 26934 28944 35376 35912 39798 40401 49379 53064 53868 71824 79596 80802 98758 106128 107736 121203 148137 159192 161604 197516 215472 242406 296274 318384 323208 395032 444411 484812 592548 646416 790064 888822 969624 1185096 1333233 1777644 1939248 2370192 2666466 3555288 5332932 7110576 10665864 21331728
- Sum of all divisors σ(n): 67808160
- Sum of proper divisors (its aliquot sum) s(n): 46476432
- 21331728 is an abundant number, because the sum of its proper divisors (46476432) is greater than itself. Its abundance is 25144704
Bases of 21331728
- Binary: 10100010101111111000100002
- Hexadecimal: 0x1457F10
- Base-36: CP7O0
Squares and roots of 21331728
- 21331728 squared (213317282) is 455042619465984
- 21331728 cubed (213317283) is 9706845386855875940352
-
The
square root of 21331728 is 4618.6283678165 -
The
cube root of 21331728 is 277.3375528409
Scales and comparisons
How big is 21331728?- 21,331,728 seconds is equal to 35 weeks, 1 day, 21 hours, 28 minutes, 48 seconds.
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To count from 1 to 21,331,728 would take you about six 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 21331728 cubic inches would be around 23.1 feet tall.
Recreational maths with 21331728
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"Number 21331728 - Facts about the integer". Numbermatics.com. 2024. Web. 27 April 2024.
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The information we have on file for 21331728 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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