12987915

12,987,915 is an odd composite number composed of five prime numbers multiplied together.

What does the number 12987915 look like?

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

12987915 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 12987915:

3 × 5 × 17 × 31² × 53

(3 × 5 × 17 × 31 × 31 × 53)

See below for interesting mathematical facts about the number 12987915 from the Numbermatics database.

Names of 12987915

Cardinal: 12987915 can be written as Twelve million, nine hundred eighty-seven thousand, nine hundred fifteen.

Scientific notation

Scientific notation: 1.2987915 × 10⁷

Factors of 12987915

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 109

Divisors of 12987915

Number of divisors d(n): 48
Complete list of divisors:
1 3 5 15 17 31 51 53 85 93 155 159 255 265 465 527 795 901 961 1581 1643 2635 2703 2883 4505 4805 4929 7905 8215 13515 14415 16337 24645 27931 49011 50933 81685 83793 139655 152799 245055 254665 418965 763995 865861 2597583 4329305 12987915
Sum of all divisors σ(n): 23164704
Sum of proper divisors (its aliquot sum) s(n): 10176789
12987915 is a deficient number, because the sum of its proper divisors (10176789) is less than itself. Its deficiency is 2811126

Bases of 12987915

Binary: 110001100010111000001011₂
Hexadecimal: 0xC62E0B
Base-36: 7QDJF

Squares and roots of 12987915

12987915 squared (12987915²) is 168685936047225
12987915 cubed (12987915³) is 2190878599076794285875
The square root of 12987915 is 3603.8749978321
The cube root of 12987915 is 235.0605849527

Scales and comparisons

How big is 12987915?

12,987,915 seconds is equal to 21 weeks, 3 days, 7 hours, 45 minutes, 15 seconds.
To count from 1 to 12,987,915 would take you about thirty-two 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 12987915 cubic inches would be around 19.6 feet tall.

Recreational maths with 12987915

12987915 backwards is 51978921
The number of decimal digits it has is: 8
The sum of 12987915's digits is 42
More coming soon!

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The information we have on file for 12987915 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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