21420680
21,420,680 is an even composite number composed of four prime numbers multiplied together.
21420680 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 21420680:
23 × 5 × 173 × 109
(2 × 2 × 2 × 5 × 17 × 17 × 17 × 109)See below for interesting mathematical facts about the number 21420680 from the Numbermatics database.
Names of 21420680
- Cardinal: 21420680 can be written as Twenty-one million, four hundred twenty thousand, six hundred eighty.
Scientific notation
- Scientific notation: 2.142068 × 107
Factors of 21420680
Divisors of 21420680
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 4 5 8 10 17 20 34 40 68 85 109 136 170 218 289 340 436 545 578 680 872 1090 1156 1445 1853 2180 2312 2890 3706 4360 4913 5780 7412 9265 9826 11560 14824 18530 19652 24565 31501 37060 39304 49130 63002 74120 98260 126004 157505 196520 252008 315010 535517 630020 1071034 1260040 2142068 2677585 4284136 5355170 10710340 21420680
- Sum of all divisors σ(n): 51678000
- Sum of proper divisors (its aliquot sum) s(n): 30257320
- 21420680 is an abundant number, because the sum of its proper divisors (30257320) is greater than itself. Its abundance is 8836640
Bases of 21420680
- Binary: 10100011011011010100010002
- Hexadecimal: 0x146DA88
- Base-36: CR4AW
Squares and roots of 21420680
- 21420680 squared (214206802) is 458845531662400
- 21420680 cubed (214206803) is 9828783303170138432000
-
The
square root of 21420680 is 4628.2480486681 -
The
cube root of 21420680 is 277.7225117903
Scales and comparisons
How big is 21420680?- 21,420,680 seconds is equal to 35 weeks, 2 days, 22 hours, 11 minutes, 20 seconds.
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To count from 1 to 21,420,680 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 21420680 cubic inches would be around 23.1 feet tall.
Recreational maths with 21420680
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The information we have on file for 21420680 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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