21213540
21,213,540 is an even composite number composed of five prime numbers multiplied together.
What does the number 21213540 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 72 divisors.
21213540 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 21213540:
22 × 32 × 5 × 67 × 1759
(2 × 2 × 3 × 3 × 5 × 67 × 1759)See below for interesting mathematical facts about the number 21213540 from the Numbermatics database.
Names of 21213540
- Cardinal: 21213540 can be written as Twenty-one million, two hundred thirteen thousand, five hundred forty.
Scientific notation
- Scientific notation: 2.121354 × 107
Factors of 21213540
Divisors of 21213540
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 67 90 134 180 201 268 335 402 603 670 804 1005 1206 1340 1759 2010 2412 3015 3518 4020 5277 6030 7036 8795 10554 12060 15831 17590 21108 26385 31662 35180 52770 63324 79155 105540 117853 158310 235706 316620 353559 471412 589265 707118 1060677 1178530 1414236 1767795 2121354 2357060 3535590 4242708 5303385 7071180 10606770 21213540
- Sum of all divisors σ(n): 65345280
- Sum of proper divisors (its aliquot sum) s(n): 44131740
- 21213540 is an abundant number, because the sum of its proper divisors (44131740) is greater than itself. Its abundance is 22918200
Bases of 21213540
- Binary: 10100001110110001011001002
- Hexadecimal: 0x143B164
- Base-36: CMOH0
Squares and roots of 21213540
- 21213540 squared (212135402) is 450014279331600
- 21213540 cubed (212135403) is 9546395915172069864000
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The
square root of 21213540 is 4605.8158886347 -
The
cube root of 21213540 is 276.8244096497
Scales and comparisons
How big is 21213540?- 21,213,540 seconds is equal to 35 weeks, 12 hours, 39 minutes.
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To count from 1 to 21,213,540 would take you about four 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 21213540 cubic inches would be around 23.1 feet tall.
Recreational maths with 21213540
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The information we have on file for 21213540 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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