28240

28,240 is an even composite number composed of three prime numbers multiplied together.

What does the number 28240 look like?

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

28240 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 28240:

2⁴ × 5 × 353

(2 × 2 × 2 × 2 × 5 × 353)

See below for interesting mathematical facts about the number 28240 from the Numbermatics database.

Names of 28240

Cardinal: 28240 can be written as Twenty-eight thousand, two hundred forty.

Scientific notation

Scientific notation: 2.824 × 10⁴

Factors of 28240

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 360

Divisors of 28240

Number of divisors d(n): 20
Complete list of divisors:
1 2 4 5 8 10 16 20 40 80 353 706 1412 1765 2824 3530 5648 7060 14120 28240
Sum of all divisors σ(n): 65844
Sum of proper divisors (its aliquot sum) s(n): 37604
28240 is an abundant number, because the sum of its proper divisors (37604) is greater than itself. Its abundance is 9364

Bases of 28240

Binary: 110111001010000₂
Hexadecimal: 0x6E50
Base-36: LSG

Squares and roots of 28240

28240 squared (28240²) is 797497600
28240 cubed (28240³) is 22521332224000
The square root of 28240 is 168.0476123009
The cube root of 28240 is 30.4524026927

Scales and comparisons

How big is 28240?

28,240 seconds is equal to 7 hours, 50 minutes, 40 seconds.
To count from 1 to 28,240 would take you about seven 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 28240 cubic inches would be around 2.5 feet tall.

Recreational maths with 28240

28240 backwards is 04282
28240 is a Harshad number.
The number of decimal digits it has is: 5
The sum of 28240's digits is 16
More coming soon!

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The information we have on file for 28240 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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