12428721

12,428,721 is an odd composite number composed of two prime numbers multiplied together.

What does the number 12428721 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 16 divisors.

12428721 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 12428721:

3⁷ × 5683

(3 × 3 × 3 × 3 × 3 × 3 × 3 × 5683)

See below for interesting mathematical facts about the number 12428721 from the Numbermatics database.

Names of 12428721

Cardinal: 12428721 can be written as Twelve million, four hundred twenty-eight thousand, seven hundred twenty-one.

Scientific notation

Scientific notation: 1.2428721 × 10⁷

Factors of 12428721

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 8
Sum of prime factors: 5686

Divisors of 12428721

Number of divisors d(n): 16
Complete list of divisors:
1 3 9 27 81 243 729 2187 5683 17049 51147 153441 460323 1380969 4142907 12428721
Sum of all divisors σ(n): 18643520
Sum of proper divisors (its aliquot sum) s(n): 6214799
12428721 is a deficient number, because the sum of its proper divisors (6214799) is less than itself. Its deficiency is 6213922

Bases of 12428721

Binary: 101111011010010110110001₂
Hexadecimal: 0xBDA5B1
Base-36: 7EE29

Squares and roots of 12428721

12428721 squared (12428721²) is 154473105695841
12428721 cubed (12428721³) is 1919903132697118649361
The square root of 12428721 is 3525.4391215847
The cube root of 12428721 is 231.6374701111

Scales and comparisons

How big is 12428721?

12,428,721 seconds is equal to 20 weeks, 3 days, 20 hours, 25 minutes, 21 seconds.
To count from 1 to 12,428,721 would take you about thirty 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 12428721 cubic inches would be around 19.3 feet tall.

Recreational maths with 12428721

12428721 backwards is 12782421
12428721 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 12428721's digits is 27
More coming soon!

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The information we have on file for 12428721 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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