668144988
668,144,988 is an even composite number composed of five prime numbers multiplied together.
What does the number 668144988 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 108 divisors.
668144988 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 668144988:
22 × 32 × 72 × 521 × 727
(2 × 2 × 3 × 3 × 7 × 7 × 521 × 727)See below for interesting mathematical facts about the number 668144988 from the Numbermatics database.
Names of 668144988
- Cardinal: 668144988 can be written as Six hundred sixty-eight million, one hundred forty-four thousand, nine hundred eighty-eight.
Scientific notation
- Scientific notation: 6.68144988 × 108
Factors of 668144988
Divisors of 668144988
- Number of divisors d(n): 108
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Complete list of divisors:
1 2 3 4 6 7 9 12 14 18 21 28 36 42 49 63 84 98 126 147 196 252 294 441 521 588 727 882 1042 1454 1563 1764 2084 2181 2908 3126 3647 4362 4689 5089 6252 6543 7294 8724 9378 10178 10941 13086 14588 15267 18756 20356 21882 25529 26172 30534 32823 35623 43764 45801 51058 61068 65646 71246 76587 91602 102116 106869 131292 142492 153174 183204 213738 229761 306348 320607 378767 427476 459522 641214 757534 919044 1136301 1282428 1515068 2272602 2651369 3408903 4545204 5302738 6817806 7954107 10605476 13635612 15908214 18559583 23862321 31816428 37119166 47724642 55678749 74238332 95449284 111357498 167036247 222714996 334072494 668144988
- Sum of all divisors σ(n): 1971142992
- Sum of proper divisors (its aliquot sum) s(n): 1302998004
- 668144988 is an abundant number, because the sum of its proper divisors (1302998004) is greater than itself. Its abundance is 634853016
Bases of 668144988
- Binary: 1001111101001100010101010111002
- Hexadecimal: 0x27D3155C
- Base-36: B1SNZ0
Squares and roots of 668144988
- 668144988 squared (6681449882) is 446417724989520144
- 668144988 cubed (6681449883) is 298271765506110236738638272
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The
square root of 668144988 is 25848.5006915295 -
The
cube root of 668144988 is 874.2257043541
Scales and comparisons
How big is 668144988?- 668,144,988 seconds is equal to 21 years, 12 weeks, 5 days, 3 hours, 49 minutes, 48 seconds.
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To count from 1 to 668,144,988 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 668144988 cubic inches would be around 72.9 feet tall.
Recreational maths with 668144988
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