129428

129,428 is an even composite number composed of four prime numbers multiplied together.

What does the number 129428 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

129428 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 129428:

2² × 13 × 19 × 131

(2 × 2 × 13 × 19 × 131)

See below for interesting mathematical facts about the number 129428 from the Numbermatics database.

Names of 129428

Cardinal: 129428 can be written as One hundred twenty-nine thousand, four hundred twenty-eight.

Scientific notation

Scientific notation: 1.29428 × 10⁵

Factors of 129428

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 165

Divisors of 129428

Number of divisors d(n): 24
Complete list of divisors:
1 2 4 13 19 26 38 52 76 131 247 262 494 524 988 1703 2489 3406 4978 6812 9956 32357 64714 129428
Sum of all divisors σ(n): 258720
Sum of proper divisors (its aliquot sum) s(n): 129292
129428 is a deficient number, because the sum of its proper divisors (129292) is less than itself. Its deficiency is 136

Bases of 129428

Binary: 11111100110010100₂
Hexadecimal: 0x1F994
Base-36: 2RV8

Squares and roots of 129428

129428 squared (129428²) is 16751607184
129428 cubed (129428³) is 2168127014610752
The square root of 129428 is 359.7610317975
The cube root of 129428 is 50.5835625967

Scales and comparisons

How big is 129428?

129,428 seconds is equal to 1 day, 11 hours, 57 minutes, 8 seconds.
To count from 1 to 129,428 would take you about eleven hours.

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 129428 cubic inches would be around 4.2 feet tall.

Recreational maths with 129428

129428 backwards is 824921
129428 is a Harshad number.
The number of decimal digits it has is: 6
The sum of 129428's digits is 26
More coming soon!

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The information we have on file for 129428 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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