640042128
640,042,128 is an even composite number composed of four prime numbers multiplied together.
640042128 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 640042128:
24 × 33 × 11 × 3672
(2 × 2 × 2 × 2 × 3 × 3 × 3 × 11 × 367 × 367)See below for interesting mathematical facts about the number 640042128 from the Numbermatics database.
Names of 640042128
- Cardinal: 640042128 can be written as Six hundred forty million, forty-two thousand, one hundred twenty-eight.
Scientific notation
- Scientific notation: 6.40042128 × 108
Factors of 640042128
Divisors of 640042128
- Number of divisors d(n): 120
-
Complete list of divisors:
1 2 3 4 6 8 9 11 12 16 18 22 24 27 33 36 44 48 54 66 72 88 99 108 132 144 176 198 216 264 297 367 396 432 528 594 734 792 1101 1188 1468 1584 2202 2376 2936 3303 4037 4404 4752 5872 6606 8074 8808 9909 12111 13212 16148 17616 19818 24222 26424 32296 36333 39636 48444 52848 64592 72666 79272 96888 108999 134689 145332 158544 193776 217998 269378 290664 404067 435996 538756 581328 808134 871992 1077512 1212201 1481579 1616268 1743984 2155024 2424402 2963158 3232536 3636603 4444737 4848804 5926316 6465072 7273206 8889474 9697608 11852632 13334211 14546412 17778948 19395216 23705264 26668422 29092824 35557896 40002633 53336844 58185648 71115792 80005266 106673688 160010532 213347376 320021064 640042128
- Sum of all divisors σ(n): 2009648160
- Sum of proper divisors (its aliquot sum) s(n): 1369606032
- 640042128 is an abundant number, because the sum of its proper divisors (1369606032) is greater than itself. Its abundance is 729563904
Bases of 640042128
- Binary: 1001100010011001000100100100002
- Hexadecimal: 0x26264490
- Base-36: AL2BO0
Squares and roots of 640042128
- 640042128 squared (6400421282) is 409653925614768384
- 640042128 cubed (6400421283) is 262195770294030064722481152
-
The
square root of 640042128 is 25299.0538953535 -
The
cube root of 640042128 is 861.7927843531
Scales and comparisons
How big is 640042128?- 640,042,128 seconds is equal to 20 years, 18 weeks, 1 day, 21 hours, 28 minutes, 48 seconds.
-
To count from 1 to 640,042,128 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 640042128 cubic inches would be around 71.8 feet tall.
Recreational maths with 640042128
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