128500

128,500 is an even composite number composed of three prime numbers multiplied together.

What does the number 128500 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 24 divisors.

128500 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 128500:

2² × 5³ × 257

(2 × 2 × 5 × 5 × 5 × 257)

See below for interesting mathematical facts about the number 128500 from the Numbermatics database.

Names of 128500

Cardinal: 128500 can be written as One hundred twenty-eight thousand, five hundred.

Scientific notation

Scientific notation: 1.285 × 10⁵

Factors of 128500

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 264

Divisors of 128500

Number of divisors d(n): 24
Complete list of divisors:
1 2 4 5 10 20 25 50 100 125 250 257 500 514 1028 1285 2570 5140 6425 12850 25700 32125 64250 128500
Sum of all divisors σ(n): 281736
Sum of proper divisors (its aliquot sum) s(n): 153236
128500 is an abundant number, because the sum of its proper divisors (153236) is greater than itself. Its abundance is 24736

Bases of 128500

Binary: 11111010111110100₂
Hexadecimal: 0x1F5F4
Base-36: 2R5G

Squares and roots of 128500

128500 squared (128500²) is 16512250000
128500 cubed (128500³) is 2121824125000000
The square root of 128500 is 358.4689665787
The cube root of 128500 is 50.4623776249

Scales and comparisons

How big is 128500?

128,500 seconds is equal to 1 day, 11 hours, 41 minutes, 40 seconds.
To count from 1 to 128,500 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 128500 cubic inches would be around 4.2 feet tall.

Recreational maths with 128500

128500 backwards is 005821
The number of decimal digits it has is: 6
The sum of 128500's digits is 16
More coming soon!

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The information we have on file for 128500 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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