28784

28,784 is an even composite number composed of three prime numbers multiplied together.

What does the number 28784 look like?

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

28784 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 28784:

2⁴ × 7 × 257

(2 × 2 × 2 × 2 × 7 × 257)

See below for interesting mathematical facts about the number 28784 from the Numbermatics database.

Names of 28784

Cardinal: 28784 can be written as Twenty-eight thousand, seven hundred eighty-four.

Scientific notation

Scientific notation: 2.8784 × 10⁴

Factors of 28784

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 266

Divisors of 28784

Number of divisors d(n): 20
Complete list of divisors:
1 2 4 7 8 14 16 28 56 112 257 514 1028 1799 2056 3598 4112 7196 14392 28784
Sum of all divisors σ(n): 63984
Sum of proper divisors (its aliquot sum) s(n): 35200
28784 is an abundant number, because the sum of its proper divisors (35200) is greater than itself. Its abundance is 6416

Bases of 28784

Binary: 111000001110000₂
Hexadecimal: 0x7070
Base-36: M7K

Squares and roots of 28784

28784 squared (28784²) is 828518656
28784 cubed (28784³) is 23848080994304
The square root of 28784 is 169.6584804835
The cube root of 28784 is 30.6466998781

Scales and comparisons

How big is 28784?

28,784 seconds is equal to 7 hours, 59 minutes, 44 seconds.
To count from 1 to 28,784 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 28784 cubic inches would be around 2.6 feet tall.

Recreational maths with 28784

28784 backwards is 48782
The number of decimal digits it has is: 5
The sum of 28784's digits is 29
More coming soon!

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The information we have on file for 28784 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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