21420972
21,420,972 is an even composite number composed of five prime numbers multiplied together.
What does the number 21420972 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 72 divisors.
21420972 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21420972:
22 × 32 × 67 × 83 × 107
(2 × 2 × 3 × 3 × 67 × 83 × 107)See below for interesting mathematical facts about the number 21420972 from the Numbermatics database.
Names of 21420972
- Cardinal: 21420972 can be written as Twenty-one million, four hundred twenty thousand, nine hundred seventy-two.
Scientific notation
- Scientific notation: 2.1420972 × 107
Factors of 21420972
Divisors of 21420972
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 6 9 12 18 36 67 83 107 134 166 201 214 249 268 321 332 402 428 498 603 642 747 804 963 996 1206 1284 1494 1926 2412 2988 3852 5561 7169 8881 11122 14338 16683 17762 21507 22244 26643 28676 33366 35524 43014 50049 53286 64521 66732 79929 86028 100098 106572 129042 159858 200196 258084 319716 595027 1190054 1785081 2380108 3570162 5355243 7140324 10710486 21420972
- Sum of all divisors σ(n): 56137536
- Sum of proper divisors (its aliquot sum) s(n): 34716564
- 21420972 is an abundant number, because the sum of its proper divisors (34716564) is greater than itself. Its abundance is 13295592
Bases of 21420972
- Binary: 10100011011011011101011002
- Hexadecimal: 0x146DBAC
- Base-36: CR4J0
Squares and roots of 21420972
- 21420972 squared (214209722) is 458858041424784
- 21420972 cubed (214209723) is 9829185257335138170048
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The
square root of 21420972 is 4628.2795939747 -
The
cube root of 21420972 is 277.7237737267
Scales and comparisons
How big is 21420972?- 21,420,972 seconds is equal to 35 weeks, 2 days, 22 hours, 16 minutes, 12 seconds.
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To count from 1 to 21,420,972 would take you about twenty-one 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 21420972 cubic inches would be around 23.1 feet tall.
Recreational maths with 21420972
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The information we have on file for 21420972 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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