21191312988
21,191,312,988 is an even composite number composed of four prime numbers multiplied together.
21191312988 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty divisors.
Prime factorization of 21191312988:
22 × 34 × 131 × 499277
(2 × 2 × 3 × 3 × 3 × 3 × 131 × 499277)See below for interesting mathematical facts about the number 21191312988 from the Numbermatics database.
Names of 21191312988
- Cardinal: 21191312988 can be written as Twenty-one billion, one hundred ninety-one million, three hundred twelve thousand, nine hundred eighty-eight.
Scientific notation
- Scientific notation: 2.1191312988 × 1010
Factors of 21191312988
Divisors of 21191312988
- Number of divisors d(n): 60
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Complete list of divisors:
1 2 3 4 6 9 12 18 27 36 54 81 108 131 162 262 324 393 524 786 1179 1572 2358 3537 4716 7074 10611 14148 21222 42444 499277 998554 1497831 1997108 2995662 4493493 5991324 8986986 13480479 17973972 26960958 40441437 53921916 65405287 80882874 130810574 161765748 196215861 261621148 392431722 588647583 784863444 1177295166 1765942749 2354590332 3531885498 5297828247 7063770996 10595656494 21191312988
- Sum of all divisors σ(n): 55821277512
- Sum of proper divisors (its aliquot sum) s(n): 34629964524
- 21191312988 is an abundant number, because the sum of its proper divisors (34629964524) is greater than itself. Its abundance is 13438651536
Bases of 21191312988
- Binary: 100111011110001100111000110010111002
- Hexadecimal: 0x4EF19C65C
- Base-36: 9QGRDR0
Squares and roots of 21191312988
- 21191312988 squared (211913129882) is 449071746155377488144
- 21191312988 cubed (211913129883) is 9516419926846290030548763214272
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The
square root of 21191312988 is 145572.3634073445 -
The
cube root of 21191312988 is 2767.2769265193
Scales and comparisons
How big is 21191312988?- 21,191,312,988 seconds is equal to 673 years, 42 weeks, 3 days, 19 hours, 49 minutes, 48 seconds.
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To count from 1 to 21,191,312,988 would take you about one thousand, three hundred forty-seven 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 21191312988 cubic inches would be around 230.6 feet tall.
Recreational maths with 21191312988
- 21191312988 backwards is 88921319112
- The number of decimal digits it has is: 11
- The sum of 21191312988's digits is 45
- More coming soon!
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The information we have on file for 21191312988 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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