21216020

21,216,020 is an even composite number composed of four prime numbers multiplied together.

What does the number 21216020 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 36 divisors.

21216020 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-six divisors.

Prime factorization of 21216020:

2² × 5 × 7² × 21649

(2 × 2 × 5 × 7 × 7 × 21649)

See below for interesting mathematical facts about the number 21216020 from the Numbermatics database.

Names of 21216020

Cardinal: 21216020 can be written as Twenty-one million, two hundred sixteen thousand and twenty.

Scientific notation

Scientific notation: 2.121602 × 10⁷

Factors of 21216020

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 21663

Divisors of 21216020

Number of divisors d(n): 36
Complete list of divisors:
1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 490 980 21649 43298 86596 108245 151543 216490 303086 432980 606172 757715 1060801 1515430 2121602 3030860 4243204 5304005 10608010 21216020
Sum of all divisors σ(n): 51830100
Sum of proper divisors (its aliquot sum) s(n): 30614080
21216020 is an abundant number, because the sum of its proper divisors (30614080) is greater than itself. Its abundance is 9398060

Bases of 21216020

Binary: 1010000111011101100010100₂
Hexadecimal: 0x143BB14
Base-36: CMQDW

Squares and roots of 21216020

21216020 squared (21216020²) is 450119504640400
21216020 cubed (21216020³) is 9549744412840819208000
The square root of 21216020 is 4606.0851055967
The cube root of 21216020 is 276.8351967505

Scales and comparisons

How big is 21216020?

21,216,020 seconds is equal to 35 weeks, 13 hours, 20 minutes, 20 seconds.
To count from 1 to 21,216,020 would take you about four 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 21216020 cubic inches would be around 23.1 feet tall.

Recreational maths with 21216020

21216020 backwards is 02061212
21216020 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21216020's digits is 14
More coming soon!

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The information we have on file for 21216020 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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