640040968
640,040,968 is an even composite number composed of five prime numbers multiplied together.
640040968 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 640040968:
23 × 7 × 59 × 307 × 631
(2 × 2 × 2 × 7 × 59 × 307 × 631)See below for interesting mathematical facts about the number 640040968 from the Numbermatics database.
Names of 640040968
- Cardinal: 640040968 can be written as Six hundred forty million, forty thousand, nine hundred sixty-eight.
Scientific notation
- Scientific notation: 6.40040968 × 108
Factors of 640040968
Divisors of 640040968
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 4 7 8 14 28 56 59 118 236 307 413 472 614 631 826 1228 1262 1652 2149 2456 2524 3304 4298 4417 5048 8596 8834 17192 17668 18113 35336 36226 37229 72452 74458 126791 144904 148916 193717 253582 260603 297832 387434 507164 521206 774868 1014328 1042412 1356019 1549736 2084824 2712038 5424076 10848152 11429303 22858606 45717212 80005121 91434424 160010242 320020484 640040968
- Sum of all divisors σ(n): 1401523200
- Sum of proper divisors (its aliquot sum) s(n): 761482232
- 640040968 is an abundant number, because the sum of its proper divisors (761482232) is greater than itself. Its abundance is 121441264
Bases of 640040968
- Binary: 1001100010011001000000000010002
- Hexadecimal: 0x26264008
- Base-36: AL2ARS
Squares and roots of 640040968
- 640040968 squared (6400409682) is 409652440718377024
- 640040968 cubed (6400409683) is 262194344700952645829919232
-
The
square root of 640040968 is 25299.0309695845 -
The
cube root of 640040968 is 861.7922637205
Scales and comparisons
How big is 640040968?- 640,040,968 seconds is equal to 20 years, 18 weeks, 1 day, 21 hours, 9 minutes, 28 seconds.
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To count from 1 to 640,040,968 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 640040968 cubic inches would be around 71.8 feet tall.
Recreational maths with 640040968
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