21311978090
21,311,978,090 is an even composite number composed of seven prime numbers multiplied together.
21311978090 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 21311978090:
2 × 5 × 13 × 17 × 61 × 149 × 1061
See below for interesting mathematical facts about the number 21311978090 from the Numbermatics database.
Names of 21311978090
- Cardinal: 21311978090 can be written as Twenty-one billion, three hundred eleven million, nine hundred seventy-eight thousand and ninety.
Scientific notation
- Scientific notation: 2.131197809 × 1010
Factors of 21311978090
Divisors of 21311978090
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 5 10 13 17 26 34 61 65 85 122 130 149 170 221 298 305 442 610 745 793 1037 1061 1105 1490 1586 1937 2074 2122 2210 2533 3874 3965 5066 5185 5305 7930 9089 9685 10370 10610 12665 13481 13793 18037 18178 19370 25330 26962 27586 32929 36074 45445 64721 65858 67405 68965 90185 90890 118157 129442 134810 137930 154513 158089 164645 180370 234481 236314 309026 316178 323605 329290 468962 590785 647210 772565 790445 841373 1100257 1172405 1181570 1545130 1580890 1682746 2008669 2055157 2200514 2344810 2687513 4017338 4110314 4206865 5375026 5501285 8413730 9643429 10043345 10275785 11002570 13437565 14303341 19286858 20086690 20551570 26875130 28606682 34937669 48217145 69875338 71516705 96434290 125364577 143033410 163938293 174688345 250729154 327876586 349376690 626822885 819691465 1253645770 1639382930 2131197809 4262395618 10655989045 21311978090
- Sum of all divisors σ(n): 44800257600
- Sum of proper divisors (its aliquot sum) s(n): 23488279510
- 21311978090 is an abundant number, because the sum of its proper divisors (23488279510) is greater than itself. Its abundance is 2176301420
Bases of 21311978090
- Binary: 100111101100100101011111010011010102
- Hexadecimal: 0x4F64AFA6A
- Base-36: 9SGLNJE
Squares and roots of 21311978090
- 21311978090 squared (213119780902) is 454200410108640048100
- 21311978090 cubed (213119780903) is 9679909188704351224803746129000
-
The
square root of 21311978090 is 145986.2256858503 -
The
cube root of 21311978090 is 2772.5193572659
Scales and comparisons
How big is 21311978090?- 21,311,978,090 seconds is equal to 677 years, 34 weeks, 9 hours, 54 minutes, 50 seconds.
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To count from 1 to 21,311,978,090 would take you about one thousand, three hundred fifty-five 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 21311978090 cubic inches would be around 231 feet tall.
Recreational maths with 21311978090
- 21311978090 backwards is 09087911312
- The number of decimal digits it has is: 11
- The sum of 21311978090's digits is 41
- More coming soon!
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The information we have on file for 21311978090 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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