138906640
138,906,640 is an even composite number composed of four prime numbers multiplied together.
138906640 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty divisors.
Prime factorization of 138906640:
24 × 5 × 53 × 1812
(2 × 2 × 2 × 2 × 5 × 53 × 181 × 181)See below for interesting mathematical facts about the number 138906640 from the Numbermatics database.
Names of 138906640
- Cardinal: 138906640 can be written as One hundred thirty-eight million, nine hundred six thousand, six hundred forty.
Scientific notation
- Scientific notation: 1.3890664 × 108
Factors of 138906640
Divisors of 138906640
- Number of divisors d(n): 60
-
Complete list of divisors:
1 2 4 5 8 10 16 20 40 53 80 106 181 212 265 362 424 530 724 848 905 1060 1448 1810 2120 2896 3620 4240 7240 9593 14480 19186 32761 38372 47965 65522 76744 95930 131044 153488 163805 191860 262088 327610 383720 524176 655220 767440 1310440 1736333 2620880 3472666 6945332 8681665 13890664 17363330 27781328 34726660 69453320 138906640
- Sum of all divisors σ(n): 330879492
- Sum of proper divisors (its aliquot sum) s(n): 191972852
- 138906640 is an abundant number, because the sum of its proper divisors (191972852) is greater than itself. Its abundance is 53066212
Bases of 138906640
- Binary: 10000100011110001100000100002
- Hexadecimal: 0x8478C10
- Base-36: 2AP91S
Squares and roots of 138906640
- 138906640 squared (1389066402) is 19295054636089600
- 138906640 cubed (1389066403) is 2680211208115629074944000
-
The
square root of 138906640 is 11785.8661115761 -
The
cube root of 138906640 is 517.8941461175
Scales and comparisons
How big is 138906640?- 138,906,640 seconds is equal to 4 years, 21 weeks, 4 days, 17 hours, 10 minutes, 40 seconds.
-
To count from 1 to 138,906,640 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 138906640 cubic inches would be around 43.2 feet tall.
Recreational maths with 138906640
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