21328191

21,328,191 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21328191 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 20 divisors.

21328191 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty divisors.

Prime factorization of 21328191:

3⁴ × 73 × 3607

(3 × 3 × 3 × 3 × 73 × 3607)

See below for interesting mathematical facts about the number 21328191 from the Numbermatics database.

Names of 21328191

Cardinal: 21328191 can be written as Twenty-one million, three hundred twenty-eight thousand, one hundred ninety-one.

Scientific notation

Scientific notation: 2.1328191 × 10⁷

Factors of 21328191

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 3683

Divisors of 21328191

Number of divisors d(n): 20
Complete list of divisors:
1 3 9 27 73 81 219 657 1971 3607 5913 10821 32463 97389 263311 292167 789933 2369799 7109397 21328191
Sum of all divisors σ(n): 32306032
Sum of proper divisors (its aliquot sum) s(n): 10977841
21328191 is a deficient number, because the sum of its proper divisors (10977841) is less than itself. Its deficiency is 10350350

Bases of 21328191

Binary: 1010001010111000100111111₂
Hexadecimal: 0x145713F
Base-36: CP4XR

Squares and roots of 21328191

21328191 squared (21328191²) is 454891731332481
21328191 cubed (21328191³) is 9702017730179839271871
The square root of 21328191 is 4618.2454460543
The cube root of 21328191 is 277.3222236071

Scales and comparisons

How big is 21328191?

21,328,191 seconds is equal to 35 weeks, 1 day, 20 hours, 29 minutes, 51 seconds.
To count from 1 to 21,328,191 would take you about six days!

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 21328191 cubic inches would be around 23.1 feet tall.

Recreational maths with 21328191

21328191 backwards is 19182312
21328191 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21328191's digits is 27
More coming soon!

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The information we have on file for 21328191 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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