21308280
21,308,280 is an even composite number composed of five prime numbers multiplied together.
21308280 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 21308280:
23 × 3 × 5 × 7 × 25367
(2 × 2 × 2 × 3 × 5 × 7 × 25367)See below for interesting mathematical facts about the number 21308280 from the Numbermatics database.
Names of 21308280
- Cardinal: 21308280 can be written as Twenty-one million, three hundred eight thousand, two hundred eighty.
Scientific notation
- Scientific notation: 2.130828 × 107
Factors of 21308280
Divisors of 21308280
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 84 105 120 140 168 210 280 420 840 25367 50734 76101 101468 126835 152202 177569 202936 253670 304404 355138 380505 507340 532707 608808 710276 761010 887845 1014680 1065414 1420552 1522020 1775690 2130828 2663535 3044040 3551380 4261656 5327070 7102760 10654140 21308280
- Sum of all divisors σ(n): 73059840
- Sum of proper divisors (its aliquot sum) s(n): 51751560
- 21308280 is an abundant number, because the sum of its proper divisors (51751560) is greater than itself. Its abundance is 30443280
Bases of 21308280
- Binary: 10100010100100011011110002
- Hexadecimal: 0x1452378
- Base-36: COPKO
Squares and roots of 21308280
- 21308280 squared (213082802) is 454042796558400
- 21308280 cubed (213082803) is 9674871041049423552000
-
The
square root of 21308280 is 4616.0892539031 -
The
cube root of 21308280 is 277.2358983927
Scales and comparisons
How big is 21308280?- 21,308,280 seconds is equal to 35 weeks, 1 day, 14 hours, 58 minutes.
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To count from 1 to 21,308,280 would take you about five 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 21308280 cubic inches would be around 23.1 feet tall.
Recreational maths with 21308280
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The information we have on file for 21308280 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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