20121728
20,121,728 is an even composite number composed of four prime numbers multiplied together.
20121728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 20121728:
27 × 11 × 31 × 461
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 11 × 31 × 461)See below for interesting mathematical facts about the number 20121728 from the Numbermatics database.
Names of 20121728
- Cardinal: 20121728 can be written as Twenty million, one hundred twenty-one thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.0121728 × 107
Factors of 20121728
Divisors of 20121728
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 4 8 11 16 22 31 32 44 62 64 88 124 128 176 248 341 352 461 496 682 704 922 992 1364 1408 1844 1984 2728 3688 3968 5071 5456 7376 10142 10912 14291 14752 20284 21824 28582 29504 40568 43648 57164 59008 81136 114328 157201 162272 228656 314402 324544 457312 628804 649088 914624 1257608 1829248 2515216 5030432 10060864 20121728
- Sum of all divisors σ(n): 45239040
- Sum of proper divisors (its aliquot sum) s(n): 25117312
- 20121728 is an abundant number, because the sum of its proper divisors (25117312) is greater than itself. Its abundance is 4995584
Bases of 20121728
- Binary: 10011001100001000100000002
- Hexadecimal: 0x1330880
- Base-36: BZA0W
Squares and roots of 20121728
- 20121728 squared (201217282) is 404883937705984
- 20121728 cubed (201217283) is 8146964466088754020352
-
The
square root of 20121728 is 4485.7249135451 -
The
cube root of 20121728 is 271.9913492059
Scales and comparisons
How big is 20121728?- 20,121,728 seconds is equal to 33 weeks, 1 day, 21 hours, 22 minutes, 8 seconds.
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To count from 1 to 20,121,728 would take you about forty-nine weeks!
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 20121728 cubic inches would be around 22.7 feet tall.
Recreational maths with 20121728
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"Number 20121728 - Facts about the integer". Numbermatics.com. 2024. Web. 22 May 2024.
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The information we have on file for 20121728 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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