28969731

28,969,731 is an odd composite number composed of three prime numbers multiplied together.

What does the number 28969731 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 42 divisors.

28969731 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of forty-two divisors.

Prime factorization of 28969731:

3⁶ × 7² × 811

(3 × 3 × 3 × 3 × 3 × 3 × 7 × 7 × 811)

See below for interesting mathematical facts about the number 28969731 from the Numbermatics database.

Names of 28969731

Cardinal: 28969731 can be written as Twenty-eight million, nine hundred sixty-nine thousand, seven hundred thirty-one.

Scientific notation

Scientific notation: 2.8969731 × 10⁷

Factors of 28969731

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 9
Sum of prime factors: 821

Divisors of 28969731

Number of divisors d(n): 42
Complete list of divisors:
1 3 7 9 21 27 49 63 81 147 189 243 441 567 729 811 1323 1701 2433 3969 5103 5677 7299 11907 17031 21897 35721 39739 51093 65691 119217 153279 197073 357651 459837 591219 1072953 1379511 3218859 4138533 9656577 28969731
Sum of all divisors σ(n): 50588412
Sum of proper divisors (its aliquot sum) s(n): 21618681
28969731 is a deficient number, because the sum of its proper divisors (21618681) is less than itself. Its deficiency is 7351050

Bases of 28969731

Binary: 1101110100000101100000011₂
Hexadecimal: 0x1BA0B03
Base-36: H8X6R

Squares and roots of 28969731

28969731 squared (28969731²) is 839245314212361
28969731 cubed (28969731³) is 24312710995742575044891
The square root of 28969731 is 5382.3536673095
The cube root of 28969731 is 307.1247534515

Scales and comparisons

How big is 28969731?

28,969,731 seconds is equal to 47 weeks, 6 days, 7 hours, 8 minutes, 51 seconds.
To count from 1 to 28,969,731 would take you about nineteen weeks!

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 28969731 cubic inches would be around 25.6 feet tall.

Recreational maths with 28969731

28969731 backwards is 13796982
The number of decimal digits it has is: 8
The sum of 28969731's digits is 45
More coming soon!

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The information we have on file for 28969731 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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