21691472

21,691,472 is an even composite number composed of four prime numbers multiplied together.

What does the number 21691472 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 40 divisors.

21691472 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty divisors.

Prime factorization of 21691472:

2⁴ × 11 × 37 × 3331

(2 × 2 × 2 × 2 × 11 × 37 × 3331)

See below for interesting mathematical facts about the number 21691472 from the Numbermatics database.

Names of 21691472

Cardinal: 21691472 can be written as Twenty-one million, six hundred ninety-one thousand, four hundred seventy-two.

Scientific notation

Scientific notation: 2.1691472 × 10⁷

Factors of 21691472

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 7
Sum of prime factors: 3381

Divisors of 21691472

Number of divisors d(n): 40
Complete list of divisors:
1 2 4 8 11 16 22 37 44 74 88 148 176 296 407 592 814 1628 3256 3331 6512 6662 13324 26648 36641 53296 73282 123247 146564 246494 293128 492988 586256 985976 1355717 1971952 2711434 5422868 10845736 21691472
Sum of all divisors σ(n): 47101152
Sum of proper divisors (its aliquot sum) s(n): 25409680
21691472 is an abundant number, because the sum of its proper divisors (25409680) is greater than itself. Its abundance is 3718208

Bases of 21691472

Binary: 1010010101111110001010000₂
Hexadecimal: 0x14AFC50
Base-36: CWX8W

Squares and roots of 21691472

21691472 squared (21691472²) is 470519957526784
21691472 cubed (21691472³) is 10206270484133424386048
The square root of 21691472 is 4657.4104392891
The cube root of 21691472 is 278.8879017641

Scales and comparisons

How big is 21691472?

21,691,472 seconds is equal to 35 weeks, 6 days, 1 hour, 24 minutes, 32 seconds.
To count from 1 to 21,691,472 would take you about five 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 21691472 cubic inches would be around 23.2 feet tall.

Recreational maths with 21691472

21691472 backwards is 27419612
The number of decimal digits it has is: 8
The sum of 21691472's digits is 32
More coming soon!

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The information we have on file for 21691472 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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