138987480
138,987,480 is an even composite number composed of six prime numbers multiplied together.
138987480 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 138987480:
23 × 3 × 5 × 59 × 67 × 293
(2 × 2 × 2 × 3 × 5 × 59 × 67 × 293)See below for interesting mathematical facts about the number 138987480 from the Numbermatics database.
Names of 138987480
- Cardinal: 138987480 can be written as One hundred thirty-eight million, nine hundred eighty-seven thousand, four hundred eighty.
Scientific notation
- Scientific notation: 1.3898748 × 108
Factors of 138987480
Divisors of 138987480
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 20 24 30 40 59 60 67 118 120 134 177 201 236 268 293 295 335 354 402 472 536 586 590 670 708 804 879 885 1005 1172 1180 1340 1416 1465 1608 1758 1770 2010 2344 2360 2680 2930 3516 3540 3953 4020 4395 5860 7032 7080 7906 8040 8790 11720 11859 15812 17287 17580 19631 19765 23718 31624 34574 35160 39262 39530 47436 51861 58893 59295 69148 78524 79060 86435 94872 98155 103722 117786 118590 138296 157048 158120 172870 196310 207444 235572 237180 259305 294465 345740 392620 414888 471144 474360 518610 588930 691480 785240 1037220 1158229 1177860 2074440 2316458 2355720 3474687 4632916 5791145 6949374 9265832 11582290 13898748 17373435 23164580 27797496 34746870 46329160 69493740 138987480
- Sum of all divisors σ(n): 431827200
- Sum of proper divisors (its aliquot sum) s(n): 292839720
- 138987480 is an abundant number, because the sum of its proper divisors (292839720) is greater than itself. Its abundance is 153852240
Bases of 138987480
- Binary: 10000100100011000111110110002
- Hexadecimal: 0x848C7D8
- Base-36: 2AQZFC
Squares and roots of 138987480
- 138987480 squared (1389874802) is 19317519596750400
- 138987480 cubed (1389874803) is 2684893368602954284992000
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The
square root of 138987480 is 11789.2951443247 -
The
cube root of 138987480 is 517.9945935443
Scales and comparisons
How big is 138987480?- 138,987,480 seconds is equal to 4 years, 21 weeks, 5 days, 15 hours, 38 minutes.
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To count from 1 to 138,987,480 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 138987480 cubic inches would be around 43.2 feet tall.
Recreational maths with 138987480
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