28001385

28,001,385 is an odd composite number composed of five prime numbers multiplied together.

What does the number 28001385 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 48 divisors.

28001385 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 28001385:

3² × 5 × 29 × 43 × 499

(3 × 3 × 5 × 29 × 43 × 499)

See below for interesting mathematical facts about the number 28001385 from the Numbermatics database.

Names of 28001385

Cardinal: 28001385 can be written as Twenty-eight million, one thousand, three hundred eighty-five.

Scientific notation

Scientific notation: 2.8001385 × 10⁷

Factors of 28001385

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 579

Divisors of 28001385

Number of divisors d(n): 48
Complete list of divisors:
1 3 5 9 15 29 43 45 87 129 145 215 261 387 435 499 645 1247 1305 1497 1935 2495 3741 4491 6235 7485 11223 14471 18705 21457 22455 43413 56115 64371 72355 107285 130239 193113 217065 321855 622253 651195 965565 1866759 3111265 5600277 9333795 28001385
Sum of all divisors σ(n): 51480000
Sum of proper divisors (its aliquot sum) s(n): 23478615
28001385 is a deficient number, because the sum of its proper divisors (23478615) is less than itself. Its deficiency is 4522770

Bases of 28001385

Binary: 1101010110100010001101001₂
Hexadecimal: 0x1AB4469
Base-36: GO609

Squares and roots of 28001385

28001385 squared (28001385²) is 784077561918225
28001385 cubed (28001385³) is 21955257681133556741625
The square root of 28001385 is 5291.6334907097
The cube root of 28001385 is 303.6639038617

Scales and comparisons

How big is 28001385?

28,001,385 seconds is equal to 46 weeks, 2 days, 2 hours, 9 minutes, 45 seconds.
To count from 1 to 28,001,385 would take you about seventeen 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 28001385 cubic inches would be around 25.3 feet tall.

Recreational maths with 28001385

28001385 backwards is 58310082
The number of decimal digits it has is: 8
The sum of 28001385's digits is 27
More coming soon!

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The information we have on file for 28001385 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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