21490423842
21,490,423,842 is an even composite number composed of six prime numbers multiplied together.
21490423842 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21490423842:
2 × 3 × 23 × 29 × 37 × 145133
See below for interesting mathematical facts about the number 21490423842 from the Numbermatics database.
Names of 21490423842
- Cardinal: 21490423842 can be written as Twenty-one billion, four hundred ninety million, four hundred twenty-three thousand, eight hundred forty-two.
Scientific notation
- Scientific notation: 2.1490423842 × 1010
Factors of 21490423842
Divisors of 21490423842
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 6 23 29 37 46 58 69 74 87 111 138 174 222 667 851 1073 1334 1702 2001 2146 2553 3219 4002 5106 6438 24679 49358 74037 145133 148074 290266 435399 870798 3338059 4208857 5369921 6676118 8417714 10014177 10739842 12626571 16109763 20028354 25253142 32219526 96803711 123508183 155727709 193607422 247016366 290411133 311455418 370524549 467183127 580822266 741049098 934366254 3581737307 7163474614 10745211921 21490423842
- Sum of all divisors σ(n): 47650394880
- Sum of proper divisors (its aliquot sum) s(n): 26159971038
- 21490423842 is an abundant number, because the sum of its proper divisors (26159971038) is greater than itself. Its abundance is 4669547196
Bases of 21490423842
- Binary: 101000000001110110111011000001000102
- Hexadecimal: 0x500EDD822
- Base-36: 9VEUD5U
Squares and roots of 21490423842
- 21490423842 squared (214904238422) is 461838316908802040964
- 21490423842 cubed (214904238423) is 9925101176846071120791006263688
-
The
square root of 21490423842 is 146596.1249214999 -
The
cube root of 21490423842 is 2780.2359857813
Scales and comparisons
How big is 21490423842?- 21,490,423,842 seconds is equal to 683 years, 17 weeks, 18 hours, 10 minutes, 42 seconds.
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To count from 1 to 21,490,423,842 would take you about one thousand, three hundred sixty-six 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 21490423842 cubic inches would be around 231.7 feet tall.
Recreational maths with 21490423842
- 21490423842 backwards is 24832409412
- The number of decimal digits it has is: 11
- The sum of 21490423842's digits is 39
- More coming soon!
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