642081384
642,081,384 is an even composite number composed of five prime numbers multiplied together.
642081384 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 642081384:
23 × 33 × 7 × 271 × 1567
(2 × 2 × 2 × 3 × 3 × 3 × 7 × 271 × 1567)See below for interesting mathematical facts about the number 642081384 from the Numbermatics database.
Names of 642081384
- Cardinal: 642081384 can be written as Six hundred forty-two million, eighty-one thousand, three hundred eighty-four.
Scientific notation
- Scientific notation: 6.42081384 × 108
Factors of 642081384
Divisors of 642081384
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 54 56 63 72 84 108 126 168 189 216 252 271 378 504 542 756 813 1084 1512 1567 1626 1897 2168 2439 3134 3252 3794 4701 4878 5691 6268 6504 7317 7588 9402 9756 10969 11382 12536 14103 14634 15176 17073 18804 19512 21938 22764 28206 29268 32907 34146 37608 42309 43876 45528 51219 56412 58536 65814 68292 84618 87752 98721 102438 112824 131628 136584 169236 197442 204876 263256 296163 338472 394884 409752 424657 592326 789768 849314 1184652 1273971 1698628 2369304 2547942 2972599 3397256 3821913 5095884 5945198 7643826 8917797 10191768 11465739 11890396 15287652 17835594 22931478 23780792 26753391 30575304 35671188 45862956 53506782 71342376 80260173 91725912 107013564 160520346 214027128 321040692 642081384
- Sum of all divisors σ(n): 2047180800
- Sum of proper divisors (its aliquot sum) s(n): 1405099416
- 642081384 is an abundant number, because the sum of its proper divisors (1405099416) is greater than itself. Its abundance is 763018032
Bases of 642081384
- Binary: 1001100100010101100010011010002
- Hexadecimal: 0x26456268
- Base-36: AMA160
Squares and roots of 642081384
- 642081384 squared (6420813842) is 412268503679355456
- 642081384 cubed (6420813843) is 264709931422049643416431104
-
The
square root of 642081384 is 25339.3248528843 -
The
cube root of 642081384 is 862.7070746659
Scales and comparisons
How big is 642081384?- 642,081,384 seconds is equal to 20 years, 21 weeks, 4 days, 11 hours, 56 minutes, 24 seconds.
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To count from 1 to 642,081,384 would take you about thirty 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 642081384 cubic inches would be around 71.9 feet tall.
Recreational maths with 642081384
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