138993520
138,993,520 is an even composite number composed of five prime numbers multiplied together.
138993520 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 138993520:
24 × 5 × 29 × 181 × 331
(2 × 2 × 2 × 2 × 5 × 29 × 181 × 331)See below for interesting mathematical facts about the number 138993520 from the Numbermatics database.
Names of 138993520
- Cardinal: 138993520 can be written as One hundred thirty-eight million, nine hundred ninety-three thousand, five hundred twenty.
Scientific notation
- Scientific notation: 1.3899352 × 108
Factors of 138993520
Divisors of 138993520
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 4 5 8 10 16 20 29 40 58 80 116 145 181 232 290 331 362 464 580 662 724 905 1160 1324 1448 1655 1810 2320 2648 2896 3310 3620 5249 5296 6620 7240 9599 10498 13240 14480 19198 20996 26245 26480 38396 41992 47995 52490 59911 76792 83984 95990 104980 119822 153584 191980 209960 239644 299555 383960 419920 479288 599110 767920 958576 1198220 1737419 2396440 3474838 4792880 6949676 8687095 13899352 17374190 27798704 34748380 69496760 138993520
- Sum of all divisors σ(n): 337165920
- Sum of proper divisors (its aliquot sum) s(n): 198172400
- 138993520 is an abundant number, because the sum of its proper divisors (198172400) is greater than itself. Its abundance is 59178880
Bases of 138993520
- Binary: 10000100100011011111011100002
- Hexadecimal: 0x848DF70
- Base-36: 2AR434
Squares and roots of 138993520
- 138993520 squared (1389935202) is 19319198601990400
- 138993520 cubed (1389935203) is 2685243417269724702208000
-
The
square root of 138993520 is 11789.5513061355 -
The
cube root of 138993520 is 518.0020969589
Scales and comparisons
How big is 138993520?- 138,993,520 seconds is equal to 4 years, 21 weeks, 5 days, 17 hours, 18 minutes, 40 seconds.
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To count from 1 to 138,993,520 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 138993520 cubic inches would be around 43.2 feet tall.
Recreational maths with 138993520
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