129908720

129,908,720 is an even composite number composed of three prime numbers multiplied together.

What does the number 129908720 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 20 divisors.

129908720 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty divisors.

Prime factorization of 129908720:

2⁴ × 5 × 1623859

(2 × 2 × 2 × 2 × 5 × 1623859)

See below for interesting mathematical facts about the number 129908720 from the Numbermatics database.

Names of 129908720

Cardinal: 129908720 can be written as One hundred twenty-nine million, nine hundred eight thousand, seven hundred twenty.

Scientific notation

Scientific notation: 1.2990872 × 10⁸

Factors of 129908720

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 1623866

Divisors of 129908720

Number of divisors d(n): 20
Complete list of divisors:
1 2 4 5 8 10 16 20 40 80 1623859 3247718 6495436 8119295 12990872 16238590 25981744 32477180 64954360 129908720
Sum of all divisors σ(n): 302037960
Sum of proper divisors (its aliquot sum) s(n): 172129240
129908720 is an abundant number, because the sum of its proper divisors (172129240) is greater than itself. Its abundance is 42220520

Bases of 129908720

Binary: 111101111100011111111110000₂
Hexadecimal: 0x7BE3FF0
Base-36: 25CE7K

Squares and roots of 129908720

129908720 squared (129908720²) is 16876275532038400
129908720 cubed (129908720³) is 2192375352734427534848000
The square root of 129908720 is 11397.7506552829
The cube root of 129908720 is 506.4611085201

Scales and comparisons

How big is 129908720?

129,908,720 seconds is equal to 4 years, 6 weeks, 5 days, 13 hours, 45 minutes, 20 seconds.
To count from 1 to 129,908,720 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 129908720 cubic inches would be around 42.2 feet tall.

Recreational maths with 129908720

129908720 backwards is 027809921
The number of decimal digits it has is: 9
The sum of 129908720's digits is 38
More coming soon!

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The information we have on file for 129908720 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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