129939920
129,939,920 is an even composite number composed of five prime numbers multiplied together.
129939920 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 129939920:
24 × 5 × 11 × 149 × 991
(2 × 2 × 2 × 2 × 5 × 11 × 149 × 991)See below for interesting mathematical facts about the number 129939920 from the Numbermatics database.
Names of 129939920
- Cardinal: 129939920 can be written as One hundred twenty-nine million, nine hundred thirty-nine thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 1.2993992 × 108
Factors of 129939920
Divisors of 129939920
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 4 5 8 10 11 16 20 22 40 44 55 80 88 110 149 176 220 298 440 596 745 880 991 1192 1490 1639 1982 2384 2980 3278 3964 4955 5960 6556 7928 8195 9910 10901 11920 13112 15856 16390 19820 21802 26224 32780 39640 43604 54505 65560 79280 87208 109010 131120 147659 174416 218020 295318 436040 590636 738295 872080 1181272 1476590 1624249 2362544 2953180 3248498 5906360 6496996 8121245 11812720 12993992 16242490 25987984 32484980 64969960 129939920
- Sum of all divisors σ(n): 332121600
- Sum of proper divisors (its aliquot sum) s(n): 202181680
- 129939920 is an abundant number, because the sum of its proper divisors (202181680) is greater than itself. Its abundance is 72241760
Bases of 129939920
- Binary: 1111011111010111001110100002
- Hexadecimal: 0x7BEB9D0
- Base-36: 25D2A8
Squares and roots of 129939920
- 129939920 squared (1299399202) is 16884382809606400
- 129939920 cubed (1299399203) is 2193955351529630847488000
-
The
square root of 129939920 is 11399.1192642239 -
The
cube root of 129939920 is 506.5016506325
Scales and comparisons
How big is 129939920?- 129,939,920 seconds is equal to 4 years, 6 weeks, 5 days, 22 hours, 25 minutes, 20 seconds.
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To count from 1 to 129,939,920 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 129939920 cubic inches would be around 42.2 feet tall.
Recreational maths with 129939920
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