21005442792
21,005,442,792 is an even composite number composed of four prime numbers multiplied together.
21005442792 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21005442792:
23 × 32 × 832 × 42349
(2 × 2 × 2 × 3 × 3 × 83 × 83 × 42349)See below for interesting mathematical facts about the number 21005442792 from the Numbermatics database.
Names of 21005442792
- Cardinal: 21005442792 can be written as Twenty-one billion, five million, four hundred forty-two thousand, seven hundred ninety-two.
Scientific notation
- Scientific notation: 2.1005442792 × 1010
Factors of 21005442792
Divisors of 21005442792
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 6 8 9 12 18 24 36 72 83 166 249 332 498 664 747 996 1494 1992 2988 5976 6889 13778 20667 27556 41334 42349 55112 62001 82668 84698 124002 127047 165336 169396 248004 254094 338792 381141 496008 508188 762282 1016376 1524564 3049128 3514967 7029934 10544901 14059868 21089802 28119736 31634703 42179604 63269406 84359208 126538812 253077624 291742261 583484522 875226783 1166969044 1750453566 2333938088 2625680349 3500907132 5251360698 7001814264 10502721396 21005442792
- Sum of all divisors σ(n): 57584777250
- Sum of proper divisors (its aliquot sum) s(n): 36579334458
- 21005442792 is an abundant number, because the sum of its proper divisors (36579334458) is greater than itself. Its abundance is 15573891666
Bases of 21005442792
- Binary: 100111001000000010110011110111010002
- Hexadecimal: 0x4E4059EE8
- Base-36: 9NE3JE0
Squares and roots of 21005442792
- 21005442792 squared (210054427922) is 441228626887984755264
- 21005442792 cubed (210054427923) is 9268202680288276768866072857088
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The
square root of 21005442792 is 144932.5456617665 -
The
cube root of 21005442792 is 2759.1625089735
Scales and comparisons
How big is 21005442792?- 21,005,442,792 seconds is equal to 667 years, 47 weeks, 1 day, 13 hours, 13 minutes, 12 seconds.
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To count from 1 to 21,005,442,792 would take you about one thousand, three hundred thirty-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 21005442792 cubic inches would be around 229.9 feet tall.
Recreational maths with 21005442792
- 21005442792 backwards is 29724450012
- 21005442792 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21005442792's digits is 36
- More coming soon!
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