138405680
138,405,680 is an even composite number composed of five prime numbers multiplied together.
138405680 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of eighty divisors.
Prime factorization of 138405680:
24 × 5 × 7 × 89 × 2777
(2 × 2 × 2 × 2 × 5 × 7 × 89 × 2777)See below for interesting mathematical facts about the number 138405680 from the Numbermatics database.
Names of 138405680
- Cardinal: 138405680 can be written as One hundred thirty-eight million, four hundred five thousand, six hundred eighty.
Scientific notation
- Scientific notation: 1.3840568 × 108
Factors of 138405680
Divisors of 138405680
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 89 112 140 178 280 356 445 560 623 712 890 1246 1424 1780 2492 2777 3115 3560 4984 5554 6230 7120 9968 11108 12460 13885 19439 22216 24920 27770 38878 44432 49840 55540 77756 97195 111080 155512 194390 222160 247153 311024 388780 494306 777560 988612 1235765 1555120 1730071 1977224 2471530 3460142 3954448 4943060 6920284 8650355 9886120 13840568 17300710 19772240 27681136 34601420 69202840 138405680
- Sum of all divisors σ(n): 372029760
- Sum of proper divisors (its aliquot sum) s(n): 233624080
- 138405680 is an abundant number, because the sum of its proper divisors (233624080) is greater than itself. Its abundance is 95218400
Bases of 138405680
- Binary: 10000011111111100111001100002
- Hexadecimal: 0x83FE730
- Base-36: 2AEII8
Squares and roots of 138405680
- 138405680 squared (1384056802) is 19156132256262400
- 138405680 cubed (1384056803) is 2651317511097931730432000
-
The
square root of 138405680 is 11764.5943406477 -
The
cube root of 138405680 is 517.2708095397
Scales and comparisons
How big is 138405680?- 138,405,680 seconds is equal to 4 years, 20 weeks, 5 days, 22 hours, 1 minute, 20 seconds.
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To count from 1 to 138,405,680 would take you about six 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 138405680 cubic inches would be around 43.1 feet tall.
Recreational maths with 138405680
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The information we have on file for 138405680 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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