129720320
129,720,320 is an even composite number composed of three prime numbers multiplied together.
129720320 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of fifty-six divisors.
Prime factorization of 129720320:
213 × 5 × 3167
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 3167)See below for interesting mathematical facts about the number 129720320 from the Numbermatics database.
Names of 129720320
- Cardinal: 129720320 can be written as One hundred twenty-nine million, seven hundred twenty thousand, three hundred twenty.
Scientific notation
- Scientific notation: 1.2972032 × 108
Factors of 129720320
Divisors of 129720320
- Number of divisors d(n): 56
-
Complete list of divisors:
1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1024 1280 2048 2560 3167 4096 5120 6334 8192 10240 12668 15835 20480 25336 31670 40960 50672 63340 101344 126680 202688 253360 405376 506720 810752 1013440 1621504 2026880 3243008 4053760 6486016 8107520 12972032 16215040 25944064 32430080 64860160 129720320
- Sum of all divisors σ(n): 311408064
- Sum of proper divisors (its aliquot sum) s(n): 181687744
- 129720320 is an abundant number, because the sum of its proper divisors (181687744) is greater than itself. Its abundance is 51967424
Bases of 129720320
- Binary: 1111011101101100000000000002
- Hexadecimal: 0x7BB6000
- Base-36: 258CU8
Squares and roots of 129720320
- 129720320 squared (1297203202) is 16827361420902400
- 129720320 cubed (1297203203) is 2182850708275114016768000
-
The
square root of 129720320 is 11389.4828679795 -
The
cube root of 129720320 is 506.2161584857
Scales and comparisons
How big is 129720320?- 129,720,320 seconds is equal to 4 years, 6 weeks, 3 days, 9 hours, 25 minutes, 20 seconds.
-
To count from 1 to 129,720,320 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 129720320 cubic inches would be around 42.2 feet tall.
Recreational maths with 129720320
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