68380290
68,380,290 is an even composite number composed of six prime numbers multiplied together.
68380290 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 68380290:
2 × 32 × 5 × 11 × 172 × 239
(2 × 3 × 3 × 5 × 11 × 17 × 17 × 239)See below for interesting mathematical facts about the number 68380290 from the Numbermatics database.
Names of 68380290
- Cardinal: 68380290 can be written as Sixty-eight million, three hundred eighty thousand, two hundred ninety.
Scientific notation
- Scientific notation: 6.838029 × 107
Factors of 68380290
Divisors of 68380290
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 5 6 9 10 11 15 17 18 22 30 33 34 45 51 55 66 85 90 99 102 110 153 165 170 187 198 239 255 289 306 330 374 478 495 510 561 578 717 765 867 935 990 1122 1195 1434 1445 1530 1683 1734 1870 2151 2390 2601 2629 2805 2890 3179 3366 3585 4063 4302 4335 5202 5258 5610 6358 7170 7887 8126 8415 8670 9537 10755 12189 13005 13145 15774 15895 16830 19074 20315 21510 23661 24378 26010 26290 28611 31790 36567 39435 40630 44693 47322 47685 57222 60945 69071 73134 78870 89386 95370 118305 121890 134079 138142 143055 182835 207213 223465 236610 268158 286110 345355 365670 402237 414426 446930 621639 670395 690710 759781 804474 1036065 1243278 1340790 1519562 2011185 2072130 2279343 3108195 3798905 4022370 4558686 6216390 6838029 7597810 11396715 13676058 22793430 34190145 68380290
- Sum of all divisors σ(n): 206893440
- Sum of proper divisors (its aliquot sum) s(n): 138513150
- 68380290 is an abundant number, because the sum of its proper divisors (138513150) is greater than itself. Its abundance is 70132860
Bases of 68380290
- Binary: 1000001001101100110100000102
- Hexadecimal: 0x4136682
- Base-36: 14PMKI
Squares and roots of 68380290
- 68380290 squared (683802902) is 4675864060484100
- 68380290 cubed (683802903) is 319736940456480298389000
-
The
square root of 68380290 is 8269.2375706591 -
The
cube root of 68380290 is 408.9249846979
Scales and comparisons
How big is 68380290?- 68,380,290 seconds is equal to 2 years, 9 weeks, 10 hours, 31 minutes, 30 seconds.
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To count from 1 to 68,380,290 would take you about three 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 68380290 cubic inches would be around 34.1 feet tall.
Recreational maths with 68380290
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