21972321

21,972,321 is an odd composite number composed of four prime numbers multiplied together.

What does the number 21972321 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

21972321 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 21972321:

3² × 7 × 229 × 1523

(3 × 3 × 7 × 229 × 1523)

See below for interesting mathematical facts about the number 21972321 from the Numbermatics database.

Names of 21972321

Cardinal: 21972321 can be written as Twenty-one million, nine hundred seventy-two thousand, three hundred twenty-one.

Scientific notation

Scientific notation: 2.1972321 × 10⁷

Factors of 21972321

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 1762

Divisors of 21972321

Number of divisors d(n): 24
Complete list of divisors:
1 3 7 9 21 63 229 687 1523 1603 2061 4569 4809 10661 13707 14427 31983 95949 348767 1046301 2441369 3138903 7324107 21972321
Sum of all divisors σ(n): 36454080
Sum of proper divisors (its aliquot sum) s(n): 14481759
21972321 is a deficient number, because the sum of its proper divisors (14481759) is less than itself. Its deficiency is 7490562

Bases of 21972321

Binary: 1010011110100010101100001₂
Hexadecimal: 0x14F4561
Base-36: D2XY9

Squares and roots of 21972321

21972321 squared (21972321²) is 482782890127041
21972321 cubed (21972321³) is 10607860635179075632161
The square root of 21972321 is 4687.4642398635
The cube root of 21972321 is 280.0863721633

Scales and comparisons

How big is 21972321?

21,972,321 seconds is equal to 36 weeks, 2 days, 7 hours, 25 minutes, 21 seconds.
To count from 1 to 21,972,321 would take you about 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 21972321 cubic inches would be around 23.3 feet tall.

Recreational maths with 21972321

21972321 backwards is 12327912
The number of decimal digits it has is: 8
The sum of 21972321's digits is 27
More coming soon!

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The information we have on file for 21972321 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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