28840

28,840 is an even composite number composed of four prime numbers multiplied together.

What does the number 28840 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 32 divisors.

28840 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 28840:

2³ × 5 × 7 × 103

(2 × 2 × 2 × 5 × 7 × 103)

See below for interesting mathematical facts about the number 28840 from the Numbermatics database.

Names of 28840

Cardinal: 28840 can be written as Twenty-eight thousand, eight hundred forty.

Scientific notation

Scientific notation: 2.884 × 10⁴

Factors of 28840

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 117

Divisors of 28840

Number of divisors d(n): 32
Complete list of divisors:
1 2 4 5 7 8 10 14 20 28 35 40 56 70 103 140 206 280 412 515 721 824 1030 1442 2060 2884 3605 4120 5768 7210 14420 28840
Sum of all divisors σ(n): 74880
Sum of proper divisors (its aliquot sum) s(n): 46040
28840 is an abundant number, because the sum of its proper divisors (46040) is greater than itself. Its abundance is 17200

Bases of 28840

Binary: 111000010101000₂
Hexadecimal: 0x70A8
Base-36: M94

Squares and roots of 28840

28840 squared (28840²) is 831745600
28840 cubed (28840³) is 23987543104000
The square root of 28840 is 169.8234377229
The cube root of 28840 is 30.6665616465

Scales and comparisons

How big is 28840?

28,840 seconds is equal to 8 hours, 40 seconds.
To count from 1 to 28,840 would take you about eight 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 28840 cubic inches would be around 2.6 feet tall.

Recreational maths with 28840

28840 backwards is 04882
The number of decimal digits it has is: 5
The sum of 28840's digits is 22
More coming soon!

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The information we have on file for 28840 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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