685728

685,728 is an even composite number composed of three prime numbers multiplied together.

What does the number 685728 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 36 divisors.

685728 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of thirty-six divisors.

Prime factorization of 685728:

2⁵ × 3² × 2381

(2 × 2 × 2 × 2 × 2 × 3 × 3 × 2381)

See below for interesting mathematical facts about the number 685728 from the Numbermatics database.

Names of 685728

Cardinal: 685728 can be written as Six hundred eighty-five thousand, seven hundred twenty-eight.

Scientific notation

Scientific notation: 6.85728 × 10⁵

Factors of 685728

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 8
Sum of prime factors: 2386

Divisors of 685728

Number of divisors d(n): 36
Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 288 2381 4762 7143 9524 14286 19048 21429 28572 38096 42858 57144 76192 85716 114288 171432 228576 342864 685728
Sum of all divisors σ(n): 1950858
Sum of proper divisors (its aliquot sum) s(n): 1265130
685728 is an abundant number, because the sum of its proper divisors (1265130) is greater than itself. Its abundance is 579402

Bases of 685728

Binary: 10100111011010100000₂
Hexadecimal: 0xA76A0
Base-36: EP40

Squares and roots of 685728

685728 squared (685728²) is 470222889984
685728 cubed (685728³) is 322445001902948352
The square root of 685728 is 828.0869519559
The cube root of 685728 is 88.1828155393

Scales and comparisons

How big is 685728?

685,728 seconds is equal to 1 week, 22 hours, 28 minutes, 48 seconds.
To count from 1 to 685,728 would take you about twenty-two 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 685728 cubic inches would be around 7.3 feet tall.

Recreational maths with 685728

685728 backwards is 827586
685728 is a Harshad number.
The number of decimal digits it has is: 6
The sum of 685728's digits is 36
More coming soon!

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The information we have on file for 685728 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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