138745620
138,745,620 is an even composite number composed of five prime numbers multiplied together.
138745620 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 138745620:
22 × 32 × 5 × 132 × 4561
(2 × 2 × 3 × 3 × 5 × 13 × 13 × 4561)See below for interesting mathematical facts about the number 138745620 from the Numbermatics database.
Names of 138745620
- Cardinal: 138745620 can be written as One hundred thirty-eight million, seven hundred forty-five thousand, six hundred twenty.
Scientific notation
- Scientific notation: 1.3874562 × 108
Factors of 138745620
Divisors of 138745620
- Number of divisors d(n): 108
-
Complete list of divisors:
1 2 3 4 5 6 9 10 12 13 15 18 20 26 30 36 39 45 52 60 65 78 90 117 130 156 169 180 195 234 260 338 390 468 507 585 676 780 845 1014 1170 1521 1690 2028 2340 2535 3042 3380 4561 5070 6084 7605 9122 10140 13683 15210 18244 22805 27366 30420 41049 45610 54732 59293 68415 82098 91220 118586 136830 164196 177879 205245 237172 273660 296465 355758 410490 533637 592930 711516 770809 820980 889395 1067274 1185860 1541618 1778790 2134548 2312427 2668185 3083236 3557580 3854045 4624854 5336370 6937281 7708090 9249708 10672740 11562135 13874562 15416180 23124270 27749124 34686405 46248540 69372810 138745620
- Sum of all divisors σ(n): 455825916
- Sum of proper divisors (its aliquot sum) s(n): 317080296
- 138745620 is an abundant number, because the sum of its proper divisors (317080296) is greater than itself. Its abundance is 178334676
Bases of 138745620
- Binary: 10000100010100010111000101002
- Hexadecimal: 0x8451714
- Base-36: 2ALST0
Squares and roots of 138745620
- 138745620 squared (1387456202) is 19250347069184400
- 138745620 cubed (1387456203) is 2670901339329172472328000
-
The
square root of 138745620 is 11779.0330672767 -
The
cube root of 138745620 is 517.6939551633
Scales and comparisons
How big is 138745620?- 138,745,620 seconds is equal to 4 years, 21 weeks, 2 days, 20 hours, 27 minutes.
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To count from 1 to 138,745,620 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 138745620 cubic inches would be around 43.1 feet tall.
Recreational maths with 138745620
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