640132668
640,132,668 is an even composite number composed of five prime numbers multiplied together.
640132668 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 640132668:
22 × 32 × 73 × 47 × 1103
(2 × 2 × 3 × 3 × 7 × 7 × 7 × 47 × 1103)See below for interesting mathematical facts about the number 640132668 from the Numbermatics database.
Names of 640132668
- Cardinal: 640132668 can be written as Six hundred forty million, one hundred thirty-two thousand, six hundred sixty-eight.
Scientific notation
- Scientific notation: 6.40132668 × 108
Factors of 640132668
Divisors of 640132668
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 6 7 9 12 14 18 21 28 36 42 47 49 63 84 94 98 126 141 147 188 196 252 282 294 329 343 423 441 564 588 658 686 846 882 987 1029 1103 1316 1372 1692 1764 1974 2058 2206 2303 2961 3087 3309 3948 4116 4412 4606 5922 6174 6618 6909 7721 9212 9927 11844 12348 13236 13818 15442 16121 19854 20727 23163 27636 30884 32242 39708 41454 46326 48363 51841 54047 64484 69489 82908 92652 96726 103682 108094 138978 145089 155523 162141 193452 207364 216188 277956 290178 311046 324282 362887 378329 466569 486423 580356 622092 648564 725774 756658 933138 972846 1088661 1134987 1451548 1513316 1866276 1945692 2177322 2269974 2540209 3265983 3404961 4354644 4539948 5080418 6531966 6809922 7620627 10160836 13063932 13619844 15241254 17781463 22861881 30482508 35562926 45723762 53344389 71125852 91447524 106688778 160033167 213377556 320066334 640132668
- Sum of all divisors σ(n): 1928908800
- Sum of proper divisors (its aliquot sum) s(n): 1288776132
- 640132668 is an abundant number, because the sum of its proper divisors (1288776132) is greater than itself. Its abundance is 648643464
Bases of 640132668
- Binary: 1001100010011110100110001111002
- Hexadecimal: 0x2627A63C
- Base-36: AL49J0
Squares and roots of 640132668
- 640132668 squared (6401326682) is 409769832640798224
- 640132668 cubed (6401326683) is 262307056234267652778781632
-
The
square root of 640132668 is 25300.8432270547 -
The
cube root of 640132668 is 861.8334186781
Scales and comparisons
How big is 640132668?- 640,132,668 seconds is equal to 20 years, 18 weeks, 2 days, 22 hours, 37 minutes, 48 seconds.
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To count from 1 to 640,132,668 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 640132668 cubic inches would be around 71.8 feet tall.
Recreational maths with 640132668
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