21491841

21,491,841 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21491841 look like?

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

21491841 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 21491841:

3 × 7² × 146203

(3 × 7 × 7 × 146203)

See below for interesting mathematical facts about the number 21491841 from the Numbermatics database.

Names of 21491841

Cardinal: 21491841 can be written as Twenty-one million, four hundred ninety-one thousand, eight hundred forty-one.

Scientific notation

Scientific notation: 2.1491841 × 10⁷

Factors of 21491841

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 146213

Divisors of 21491841

Number of divisors d(n): 12
Complete list of divisors:
1 3 7 21 49 147 146203 438609 1023421 3070263 7163947 21491841
Sum of all divisors σ(n): 33334512
Sum of proper divisors (its aliquot sum) s(n): 11842671
21491841 is a deficient number, because the sum of its proper divisors (11842671) is less than itself. Its deficiency is 9649170

Bases of 21491841

Binary: 1010001111111000010000001₂
Hexadecimal: 0x147F081
Base-36: CSN7L

Squares and roots of 21491841

21491841 squared (21491841²) is 461899229569281
21491841 cubed (21491841³) is 9927064799925485736321
The square root of 21491841 is 4635.9293566663
The cube root of 21491841 is 278.0297097451

Scales and comparisons

How big is 21491841?

21,491,841 seconds is equal to 35 weeks, 3 days, 17 hours, 57 minutes, 21 seconds.
To count from 1 to 21,491,841 would take you about two 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 21491841 cubic inches would be around 23.2 feet tall.

Recreational maths with 21491841

21491841 backwards is 14819412
The number of decimal digits it has is: 8
The sum of 21491841's digits is 30
More coming soon!

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The information we have on file for 21491841 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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