30918981438
30,918,981,438 is an even composite number composed of five prime numbers multiplied together.
30918981438 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 30918981438:
2 × 32 × 17 × 312 × 105143
(2 × 3 × 3 × 17 × 31 × 31 × 105143)See below for interesting mathematical facts about the number 30918981438 from the Numbermatics database.
Names of 30918981438
- Cardinal: 30918981438 can be written as Thirty billion, nine hundred eighteen million, nine hundred eighty-one thousand, four hundred thirty-eight.
Scientific notation
- Scientific notation: 3.0918981438 × 1010
Factors of 30918981438
Divisors of 30918981438
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 6 9 17 18 31 34 51 62 93 102 153 186 279 306 527 558 961 1054 1581 1922 2883 3162 4743 5766 8649 9486 16337 17298 32674 49011 98022 105143 147033 210286 294066 315429 630858 946287 1787431 1892574 3259433 3574862 5362293 6518866 9778299 10724586 16086879 19556598 29334897 32173758 55410361 58669794 101042423 110820722 166231083 202084846 303127269 332462166 498693249 606254538 909381807 997386498 1717721191 1818763614 3435442382 5153163573 10306327146 15459490719 30918981438
- Sum of all divisors σ(n): 73294410384
- Sum of proper divisors (its aliquot sum) s(n): 42375428946
- 30918981438 is an abundant number, because the sum of its proper divisors (42375428946) is greater than itself. Its abundance is 11456447508
Bases of 30918981438
- Binary: 111001100101110101000110111001111102
- Hexadecimal: 0x732EA373E
- Base-36: E7CD2RI
Squares and roots of 30918981438
- 30918981438 squared (309189814382) is 955983413163388547844
- 30918981438 cubed (309189814383) is 29558033406634695371970410919672
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The
square root of 30918981438 is 175837.9408375791 -
The
cube root of 30918981438 is 3138.6415966219
Scales and comparisons
How big is 30918981438?- 30,918,981,438 seconds is equal to 983 years, 6 weeks, 4 days, 13 hours, 57 minutes, 18 seconds.
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To count from 1 to 30,918,981,438 would take you about one thousand, nine 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 30918981438 cubic inches would be around 261.6 feet tall.
Recreational maths with 30918981438
- 30918981438 backwards is 83418981903
- The number of decimal digits it has is: 11
- The sum of 30918981438's digits is 54
- More coming soon!
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