68139240
68,139,240 is an even composite number composed of six prime numbers multiplied together.
68139240 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 68139240:
23 × 3 × 5 × 13 × 31 × 1409
(2 × 2 × 2 × 3 × 5 × 13 × 31 × 1409)See below for interesting mathematical facts about the number 68139240 from the Numbermatics database.
Names of 68139240
- Cardinal: 68139240 can be written as Sixty-eight million, one hundred thirty-nine thousand, two hundred forty.
Scientific notation
- Scientific notation: 6.813924 × 107
Factors of 68139240
Divisors of 68139240
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 13 15 20 24 26 30 31 39 40 52 60 62 65 78 93 104 120 124 130 155 156 186 195 248 260 310 312 372 390 403 465 520 620 744 780 806 930 1209 1240 1409 1560 1612 1860 2015 2418 2818 3224 3720 4030 4227 4836 5636 6045 7045 8060 8454 9672 11272 12090 14090 16120 16908 18317 21135 24180 28180 33816 36634 42270 43679 48360 54951 56360 73268 84540 87358 91585 109902 131037 146536 169080 174716 183170 218395 219804 262074 274755 349432 366340 436790 439608 524148 549510 567827 655185 732680 873580 1048296 1099020 1135654 1310370 1703481 1747160 2198040 2271308 2620740 2839135 3406962 4542616 5241480 5678270 6813924 8517405 11356540 13627848 17034810 22713080 34069620 68139240
- Sum of all divisors σ(n): 227404800
- Sum of proper divisors (its aliquot sum) s(n): 159265560
- 68139240 is an abundant number, because the sum of its proper divisors (159265560) is greater than itself. Its abundance is 91126320
Bases of 68139240
- Binary: 1000000111110111000111010002
- Hexadecimal: 0x40FB8E8
- Base-36: 14KGKO
Squares and roots of 68139240
- 68139240 squared (681392402) is 4642956027777600
- 68139240 cubed (681392403) is 316367495086184553024000
-
The
square root of 68139240 is 8254.6495988625 -
The
cube root of 68139240 is 408.4439132233
Scales and comparisons
How big is 68139240?- 68,139,240 seconds is equal to 2 years, 8 weeks, 4 days, 15 hours, 34 minutes.
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To count from 1 to 68,139,240 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 68139240 cubic inches would be around 34 feet tall.
Recreational maths with 68139240
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The information we have on file for 68139240 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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