21387108020
21,387,108,020 is an even composite number composed of four prime numbers multiplied together.
21387108020 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of fifty-four divisors.
Prime factorization of 21387108020:
22 × 5 × 532 × 6172
(2 × 2 × 5 × 53 × 53 × 617 × 617)See below for interesting mathematical facts about the number 21387108020 from the Numbermatics database.
Names of 21387108020
- Cardinal: 21387108020 can be written as Twenty-one billion, three hundred eighty-seven million, one hundred eight thousand and twenty.
Scientific notation
- Scientific notation: 2.138710802 × 1010
Factors of 21387108020
Divisors of 21387108020
- Number of divisors d(n): 54
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Complete list of divisors:
1 2 4 5 10 20 53 106 212 265 530 617 1060 1234 2468 2809 3085 5618 6170 11236 12340 14045 28090 32701 56180 65402 130804 163505 327010 380689 654020 761378 1522756 1733153 1903445 3466306 3806890 6932612 7613780 8665765 17331530 20176517 34663060 40353034 80706068 100882585 201765170 403530340 1069355401 2138710802 4277421604 5346777005 10693554010 21387108020
- Sum of all divisors σ(n): 45850641522
- Sum of proper divisors (its aliquot sum) s(n): 24463533502
- 21387108020 is an abundant number, because the sum of its proper divisors (24463533502) is greater than itself. Its abundance is 3076425482
Bases of 21387108020
- Binary: 100111110101100010101011110101101002
- Hexadecimal: 0x4FAC55EB4
- Base-36: 9TPBY5W
Squares and roots of 21387108020
- 21387108020 squared (213871080202) is 457408389459148320400
- 21387108020 cubed (213871080203) is 9782642634617034505596369608000
-
The
square root of 21387108020 is 146243.3178644413 -
The
cube root of 21387108020 is 2775.7734724573
Scales and comparisons
How big is 21387108020?- 21,387,108,020 seconds is equal to 680 years, 2 weeks, 1 day, 23 hours, 20 minutes, 20 seconds.
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To count from 1 to 21,387,108,020 would take you about one thousand, three hundred sixty years!
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 21387108020 cubic inches would be around 231.3 feet tall.
Recreational maths with 21387108020
- 21387108020 backwards is 02080178312
- The number of decimal digits it has is: 11
- The sum of 21387108020's digits is 32
- More coming soon!
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The information we have on file for 21387108020 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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