21308727990
21,308,727,990 is an even composite number composed of six prime numbers multiplied together.
21308727990 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21308727990:
2 × 3 × 5 × 112 × 89 × 65957
(2 × 3 × 5 × 11 × 11 × 89 × 65957)See below for interesting mathematical facts about the number 21308727990 from the Numbermatics database.
Names of 21308727990
- Cardinal: 21308727990 can be written as Twenty-one billion, three hundred eight million, seven hundred twenty-seven thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 2.130872799 × 1010
Factors of 21308727990
Divisors of 21308727990
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 5 6 10 11 15 22 30 33 55 66 89 110 121 165 178 242 267 330 363 445 534 605 726 890 979 1210 1335 1815 1958 2670 2937 3630 4895 5874 9790 10769 14685 21538 29370 32307 53845 64614 65957 107690 131914 161535 197871 323070 329785 395742 659570 725527 989355 1451054 1978710 2176581 3627635 4353162 5870173 7255270 7980797 10882905 11740346 15961594 17610519 21765810 23942391 29350865 35221038 39903985 47884782 58701730 64571903 79807970 88052595 119711955 129143806 176105190 193715709 239423910 322859515 387431418 645719030 710290933 968578545 1420581866 1937157090 2130872799 3551454665 4261745598 7102909330 10654363995 21308727990
- Sum of all divisors σ(n): 56845242720
- Sum of proper divisors (its aliquot sum) s(n): 35536514730
- 21308727990 is an abundant number, because the sum of its proper divisors (35536514730) is greater than itself. Its abundance is 14227786740
Bases of 21308727990
- Binary: 100111101100001100101100010101101102
- Hexadecimal: 0x4F61962B6
- Base-36: 9SENZQU
Squares and roots of 21308727990
- 21308727990 squared (213087279902) is 454061888551809440100
- 21308727990 cubed (213087279903) is 9675481273776202381405098399000
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The
square root of 21308727990 is 145975.0937317733 -
The
cube root of 21308727990 is 2772.3784126883
Scales and comparisons
How big is 21308727990?- 21,308,727,990 seconds is equal to 677 years, 28 weeks, 4 days, 19 hours, 6 minutes, 30 seconds.
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To count from 1 to 21,308,727,990 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 21308727990 cubic inches would be around 231 feet tall.
Recreational maths with 21308727990
- 21308727990 backwards is 09972780312
- The number of decimal digits it has is: 11
- The sum of 21308727990's digits is 48
- More coming soon!
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