138888320
138,888,320 is an even composite number composed of five prime numbers multiplied together.
138888320 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 138888320:
27 × 5 × 41 × 67 × 79
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 41 × 67 × 79)See below for interesting mathematical facts about the number 138888320 from the Numbermatics database.
Names of 138888320
- Cardinal: 138888320 can be written as One hundred thirty-eight million, eight hundred eighty-eight thousand, three hundred twenty.
Scientific notation
- Scientific notation: 1.3888832 × 108
Factors of 138888320
Divisors of 138888320
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 4 5 8 10 16 20 32 40 41 64 67 79 80 82 128 134 158 160 164 205 268 316 320 328 335 395 410 536 632 640 656 670 790 820 1072 1264 1312 1340 1580 1640 2144 2528 2624 2680 2747 3160 3239 3280 4288 5056 5248 5293 5360 5494 6320 6478 6560 8576 10112 10586 10720 10988 12640 12956 13120 13735 16195 21172 21440 21976 25280 25912 26240 26465 27470 32390 42344 42880 43952 50560 51824 52930 54940 64780 84688 87904 103648 105860 109880 129560 169376 175808 207296 211720 217013 219760 259120 338752 351616 414592 423440 434026 439520 518240 677504 846880 868052 879040 1036480 1085065 1693760 1736104 1758080 2072960 2170130 3387520 3472208 4340260 6944416 8680520 13888832 17361040 27777664 34722080 69444160 138888320
- Sum of all divisors σ(n): 349574400
- Sum of proper divisors (its aliquot sum) s(n): 210686080
- 138888320 is an abundant number, because the sum of its proper divisors (210686080) is greater than itself. Its abundance is 71797760
Bases of 138888320
- Binary: 10000100011101000100100000002
- Hexadecimal: 0x8474480
- Base-36: 2AOUWW
Squares and roots of 138888320
- 138888320 squared (1388883202) is 19289965432422400
- 138888320 cubed (1388883203) is 2679150891767220666368000
-
The
square root of 138888320 is 11785.0888838395 -
The
cube root of 138888320 is 517.8713772567
Scales and comparisons
How big is 138888320?- 138,888,320 seconds is equal to 4 years, 21 weeks, 4 days, 12 hours, 5 minutes, 20 seconds.
-
To count from 1 to 138,888,320 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 138888320 cubic inches would be around 43.2 feet tall.
Recreational maths with 138888320
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