21720072
21,720,072 is an even composite number composed of five prime numbers multiplied together.
What does the number 21720072 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 64 divisors.
21720072 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 21720072:
23 × 3 × 11 × 29 × 2837
(2 × 2 × 2 × 3 × 11 × 29 × 2837)See below for interesting mathematical facts about the number 21720072 from the Numbermatics database.
Names of 21720072
- Cardinal: 21720072 can be written as Twenty-one million, seven hundred twenty thousand and seventy-two.
Scientific notation
- Scientific notation: 2.1720072 × 107
Factors of 21720072
Divisors of 21720072
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 4 6 8 11 12 22 24 29 33 44 58 66 87 88 116 132 174 232 264 319 348 638 696 957 1276 1914 2552 2837 3828 5674 7656 8511 11348 17022 22696 31207 34044 62414 68088 82273 93621 124828 164546 187242 246819 249656 329092 374484 493638 658184 748968 905003 987276 1810006 1974552 2715009 3620012 5430018 7240024 10860036 21720072
- Sum of all divisors σ(n): 61300800
- Sum of proper divisors (its aliquot sum) s(n): 39580728
- 21720072 is an abundant number, because the sum of its proper divisors (39580728) is greater than itself. Its abundance is 17860656
Bases of 21720072
- Binary: 10100101101101100000010002
- Hexadecimal: 0x14B6C08
- Base-36: CXJBC
Squares and roots of 21720072
- 21720072 squared (217200722) is 471761527685184
- 21720072 cubed (217200723) is 10246694348152189813248
-
The
square root of 21720072 is 4660.4798036253 -
The
cube root of 21720072 is 279.0104182849
Scales and comparisons
How big is 21720072?- 21,720,072 seconds is equal to 35 weeks, 6 days, 9 hours, 21 minutes, 12 seconds.
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To count from 1 to 21,720,072 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 21720072 cubic inches would be around 23.3 feet tall.
Recreational maths with 21720072
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The information we have on file for 21720072 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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