138921920
138,921,920 is an even composite number composed of five prime numbers multiplied together.
138921920 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twelve divisors.
Prime factorization of 138921920:
26 × 5 × 19 × 73 × 313
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 19 × 73 × 313)See below for interesting mathematical facts about the number 138921920 from the Numbermatics database.
Names of 138921920
- Cardinal: 138921920 can be written as One hundred thirty-eight million, nine hundred twenty-one thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 1.3892192 × 108
Factors of 138921920
Divisors of 138921920
- Number of divisors d(n): 112
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Complete list of divisors:
1 2 4 5 8 10 16 19 20 32 38 40 64 73 76 80 95 146 152 160 190 292 304 313 320 365 380 584 608 626 730 760 1168 1216 1252 1387 1460 1520 1565 2336 2504 2774 2920 3040 3130 4672 5008 5548 5840 5947 6080 6260 6935 10016 11096 11680 11894 12520 13870 20032 22192 22849 23360 23788 25040 27740 29735 44384 45698 47576 50080 55480 59470 88768 91396 95152 100160 110960 114245 118940 182792 190304 221920 228490 237880 365584 380608 434131 443840 456980 475760 731168 868262 913960 951520 1462336 1736524 1827920 1903040 2170655 3473048 3655840 4341310 6946096 7311680 8682620 13892192 17365240 27784384 34730480 69460960 138921920
- Sum of all divisors σ(n): 354116640
- Sum of proper divisors (its aliquot sum) s(n): 215194720
- 138921920 is an abundant number, because the sum of its proper divisors (215194720) is greater than itself. Its abundance is 76272800
Bases of 138921920
- Binary: 10000100011111000111110000002
- Hexadecimal: 0x847C7C0
- Base-36: 2APKU8
Squares and roots of 138921920
- 138921920 squared (1389219202) is 19299299856486400
- 138921920 cubed (1389219203) is 2681095790718815141888000
-
The
square root of 138921920 is 11786.5143278243 -
The
cube root of 138921920 is 517.9131352085
Scales and comparisons
How big is 138921920?- 138,921,920 seconds is equal to 4 years, 21 weeks, 4 days, 21 hours, 25 minutes, 20 seconds.
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To count from 1 to 138,921,920 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 138921920 cubic inches would be around 43.2 feet tall.
Recreational maths with 138921920
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