129949520
129,949,520 is an even composite number composed of five prime numbers multiplied together.
129949520 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 129949520:
24 × 5 × 31 × 61 × 859
(2 × 2 × 2 × 2 × 5 × 31 × 61 × 859)See below for interesting mathematical facts about the number 129949520 from the Numbermatics database.
Names of 129949520
- Cardinal: 129949520 can be written as One hundred twenty-nine million, nine hundred forty-nine thousand, five hundred twenty.
Scientific notation
- Scientific notation: 1.2994952 × 108
Factors of 129949520
Divisors of 129949520
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 4 5 8 10 16 20 31 40 61 62 80 122 124 155 244 248 305 310 488 496 610 620 859 976 1220 1240 1718 1891 2440 2480 3436 3782 4295 4880 6872 7564 8590 9455 13744 15128 17180 18910 26629 30256 34360 37820 52399 53258 68720 75640 104798 106516 133145 151280 209596 213032 261995 266290 419192 426064 523990 532580 838384 1047980 1065160 1624369 2095960 2130320 3248738 4191920 6497476 8121845 12994952 16243690 25989904 32487380 64974760 129949520
- Sum of all divisors σ(n): 317360640
- Sum of proper divisors (its aliquot sum) s(n): 187411120
- 129949520 is an abundant number, because the sum of its proper divisors (187411120) is greater than itself. Its abundance is 57461600
Bases of 129949520
- Binary: 1111011111011011111010100002
- Hexadecimal: 0x7BEDF50
- Base-36: 25D9OW
Squares and roots of 129949520
- 129949520 squared (1299495202) is 16886877748230400
- 129949520 cubed (1299495203) is 2194441657681221329408000
-
The
square root of 129949520 is 11399.5403416103 -
The
cube root of 129949520 is 506.5141238229
Scales and comparisons
How big is 129949520?- 129,949,520 seconds is equal to 4 years, 6 weeks, 6 days, 1 hour, 5 minutes, 20 seconds.
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To count from 1 to 129,949,520 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 129949520 cubic inches would be around 42.2 feet tall.
Recreational maths with 129949520
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