643989164
643,989,164 is an even composite number composed of five prime numbers multiplied together.
643989164 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred eight divisors.
Prime factorization of 643989164:
22 × 72 × 13 × 312 × 263
(2 × 2 × 7 × 7 × 13 × 31 × 31 × 263)See below for interesting mathematical facts about the number 643989164 from the Numbermatics database.
Names of 643989164
- Cardinal: 643989164 can be written as Six hundred forty-three million, nine hundred eighty-nine thousand, one hundred sixty-four.
Scientific notation
- Scientific notation: 6.43989164 × 108
Factors of 643989164
Divisors of 643989164
- Number of divisors d(n): 108
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Complete list of divisors:
1 2 4 7 13 14 26 28 31 49 52 62 91 98 124 182 196 217 263 364 403 434 526 637 806 868 961 1052 1274 1519 1612 1841 1922 2548 2821 3038 3419 3682 3844 5642 6076 6727 6838 7364 8153 11284 12493 12887 13454 13676 16306 19747 23933 24986 25774 26908 32612 39494 47089 47866 49972 51548 57071 78988 87451 94178 95732 105989 114142 167531 174902 188356 211978 228284 252743 335062 349804 399497 423956 505486 612157 670124 741923 798994 1010972 1224314 1483846 1597988 1769201 2448628 2967692 3285659 3538402 5193461 6571318 7076804 10386922 12384407 13142636 20773844 22999613 24768814 45999226 49537628 91998452 160997291 321994582 643989164
- Sum of all divisors σ(n): 1464381072
- Sum of proper divisors (its aliquot sum) s(n): 820391908
- 643989164 is an abundant number, because the sum of its proper divisors (820391908) is greater than itself. Its abundance is 176402744
Bases of 643989164
- Binary: 1001100110001001111110101011002
- Hexadecimal: 0x26627EAC
- Base-36: ANEX7W
Squares and roots of 643989164
- 643989164 squared (6439891642) is 414722043349418896
- 643989164 cubed (6439891643) is 267076501988964034720842944
-
The
square root of 643989164 is 25376.9415808919 -
The
cube root of 643989164 is 863.5606673465
Scales and comparisons
How big is 643989164?- 643,989,164 seconds is equal to 20 years, 24 weeks, 5 days, 13 hours, 52 minutes, 44 seconds.
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To count from 1 to 643,989,164 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 643989164 cubic inches would be around 72 feet tall.
Recreational maths with 643989164
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