21284921

21,284,921 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21284921 look like?

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

21284921 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 21284921:

7 × 19² × 8423

(7 × 19 × 19 × 8423)

See below for interesting mathematical facts about the number 21284921 from the Numbermatics database.

Names of 21284921

Cardinal: 21284921 can be written as Twenty-one million, two hundred eighty-four thousand, nine hundred twenty-one.

Scientific notation

Scientific notation: 2.1284921 × 10⁷

Factors of 21284921

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 8449

Divisors of 21284921

Number of divisors d(n): 12
Complete list of divisors:
1 7 19 133 361 2527 8423 58961 160037 1120259 3040703 21284921
Sum of all divisors σ(n): 25676352
Sum of proper divisors (its aliquot sum) s(n): 4391431
21284921 is a deficient number, because the sum of its proper divisors (4391431) is less than itself. Its deficiency is 16893490

Bases of 21284921

Binary: 1010001001100100000111001₂
Hexadecimal: 0x144C839
Base-36: CO7JT

Squares and roots of 21284921

21284921 squared (21284921²) is 453047861976241
21284921 cubed (21284921³) is 9643087951383193561961
The square root of 21284921 is 4613.5583880557
The cube root of 21284921 is 277.1345556097

Scales and comparisons

How big is 21284921?

21,284,921 seconds is equal to 35 weeks, 1 day, 8 hours, 28 minutes, 41 seconds.
To count from 1 to 21,284,921 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 21284921 cubic inches would be around 23.1 feet tall.

Recreational maths with 21284921

21284921 backwards is 12948212
The number of decimal digits it has is: 8
The sum of 21284921's digits is 29
More coming soon!

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The information we have on file for 21284921 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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