668438368
668,438,368 is an even composite number composed of five prime numbers multiplied together.
668438368 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 668438368:
25 × 13 × 17 × 31 × 3049
(2 × 2 × 2 × 2 × 2 × 13 × 17 × 31 × 3049)See below for interesting mathematical facts about the number 668438368 from the Numbermatics database.
Names of 668438368
- Cardinal: 668438368 can be written as Six hundred sixty-eight million, four hundred thirty-eight thousand, three hundred sixty-eight.
Scientific notation
- Scientific notation: 6.68438368 × 108
Factors of 668438368
Divisors of 668438368
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 4 8 13 16 17 26 31 32 34 52 62 68 104 124 136 208 221 248 272 403 416 442 496 527 544 806 884 992 1054 1612 1768 2108 3049 3224 3536 4216 6098 6448 6851 7072 8432 12196 12896 13702 16864 24392 27404 39637 48784 51833 54808 79274 94519 97568 103666 109616 158548 189038 207332 219232 317096 378076 414664 634192 673829 756152 829328 1228747 1268384 1347658 1512304 1606823 1658656 2457494 2695316 3024608 3213646 4914988 5390632 6427292 9829976 10781264 12854584 19659952 20888699 21562528 25709168 39319904 41777398 51418336 83554796 167109592 334219184 668438368
- Sum of all divisors σ(n): 1549497600
- Sum of proper divisors (its aliquot sum) s(n): 881059232
- 668438368 is an abundant number, because the sum of its proper divisors (881059232) is greater than itself. Its abundance is 212620864
Bases of 668438368
- Binary: 1001111101011110001111011000002
- Hexadecimal: 0x27D78F60
- Base-36: B1YYCG
Squares and roots of 668438368
- 668438368 squared (6684383682) is 446809851814503424
- 668438368 cubed (6684383683) is 298664848153208507468972032
-
The
square root of 668438368 is 25854.1750593593 -
The
cube root of 668438368 is 874.3536420577
Scales and comparisons
How big is 668438368?- 668,438,368 seconds is equal to 21 years, 13 weeks, 1 day, 13 hours, 19 minutes, 28 seconds.
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To count from 1 to 668,438,368 would take you about thirty-one 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 668438368 cubic inches would be around 72.9 feet tall.
Recreational maths with 668438368
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