28128015

28,128,015 is an odd composite number composed of four prime numbers multiplied together.

What does the number 28128015 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

28128015 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 28128015:

3² × 5 × 61 × 10247

(3 × 3 × 5 × 61 × 10247)

See below for interesting mathematical facts about the number 28128015 from the Numbermatics database.

Names of 28128015

Cardinal: 28128015 can be written as Twenty-eight million, one hundred twenty-eight thousand and fifteen.

Scientific notation

Scientific notation: 2.8128015 × 10⁷

Factors of 28128015

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 10316

Divisors of 28128015

Number of divisors d(n): 24
Complete list of divisors:
1 3 5 9 15 45 61 183 305 549 915 2745 10247 30741 51235 92223 153705 461115 625067 1875201 3125335 5625603 9376005 28128015
Sum of all divisors σ(n): 49559328
Sum of proper divisors (its aliquot sum) s(n): 21431313
28128015 is a deficient number, because the sum of its proper divisors (21431313) is less than itself. Its deficiency is 6696702

Bases of 28128015

Binary: 1101011010011001100001111₂
Hexadecimal: 0x1AD330F
Base-36: GQVPR

Squares and roots of 28128015

28128015 squared (28128015²) is 791185227840225
28128015 cubed (28128015³) is 22254469956468266403375
The square root of 28128015 is 5303.5851082073
The cube root of 28128015 is 304.1209662579

Scales and comparisons

How big is 28128015?

28,128,015 seconds is equal to 46 weeks, 3 days, 13 hours, 20 minutes, 15 seconds.
To count from 1 to 28,128,015 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 28128015 cubic inches would be around 25.3 feet tall.

Recreational maths with 28128015

28128015 backwards is 51082182
The number of decimal digits it has is: 8
The sum of 28128015's digits is 27
More coming soon!

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The information we have on file for 28128015 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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