28720748

28,720,748 is an even composite number composed of three prime numbers multiplied together.

What does the number 28720748 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

28720748 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 28720748:

2² × 7 × 1025741

(2 × 2 × 7 × 1025741)

See below for interesting mathematical facts about the number 28720748 from the Numbermatics database.

Names of 28720748

Cardinal: 28720748 can be written as Twenty-eight million, seven hundred twenty thousand, seven hundred forty-eight.

Scientific notation

Scientific notation: 2.8720748 × 10⁷

Factors of 28720748

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 1025750

Divisors of 28720748

Number of divisors d(n): 12
Complete list of divisors:
1 2 4 7 14 28 1025741 2051482 4102964 7180187 14360374 28720748
Sum of all divisors σ(n): 57441552
Sum of proper divisors (its aliquot sum) s(n): 28720804
28720748 is an abundant number, because the sum of its proper divisors (28720804) is greater than itself. Its abundance is 56

Bases of 28720748

Binary: 1101101100011111001101100₂
Hexadecimal: 0x1B63E6C
Base-36: H3L2K

Squares and roots of 28720748

28720748 squared (28720748²) is 824881365679504
28720748 cubed (28720748³) is 23691209833576883148992
The square root of 28720748 is 5359.1741901155
The cube root of 28720748 is 306.2423500519

Scales and comparisons

How big is 28720748?

28,720,748 seconds is equal to 47 weeks, 3 days, 9 hours, 59 minutes, 8 seconds.
To count from 1 to 28,720,748 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 28720748 cubic inches would be around 25.5 feet tall.

Recreational maths with 28720748

28720748 backwards is 84702782
The number of decimal digits it has is: 8
The sum of 28720748's digits is 38
More coming soon!

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The information we have on file for 28720748 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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