21078220

21,078,220 is an even composite number composed of four prime numbers multiplied together.

What does the number 21078220 look like?

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

21078220 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 21078220:

2² × 5 × 19 × 55469

(2 × 2 × 5 × 19 × 55469)

See below for interesting mathematical facts about the number 21078220 from the Numbermatics database.

Names of 21078220

Cardinal: 21078220 can be written as Twenty-one million, seventy-eight thousand, two hundred twenty.

Scientific notation

Scientific notation: 2.107822 × 10⁷

Factors of 21078220

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 55495

Divisors of 21078220

Number of divisors d(n): 24
Complete list of divisors:
1 2 4 5 10 19 20 38 76 95 190 380 55469 110938 221876 277345 554690 1053911 1109380 2107822 4215644 5269555 10539110 21078220
Sum of all divisors σ(n): 46594800
Sum of proper divisors (its aliquot sum) s(n): 25516580
21078220 is an abundant number, because the sum of its proper divisors (25516580) is greater than itself. Its abundance is 4438360

Bases of 21078220

Binary: 1010000011010000011001100₂
Hexadecimal: 0x141A0CC
Base-36: CJS24

Squares and roots of 21078220

21078220 squared (21078220²) is 444291358368400
21078220 cubed (21078220³) is 9364870995787976248000
The square root of 21078220 is 4591.1022641627
The cube root of 21078220 is 276.2345377395

Scales and comparisons

How big is 21078220?

21,078,220 seconds is equal to 34 weeks, 5 days, 23 hours, 3 minutes, 40 seconds.
To count from 1 to 21,078,220 would take you about twenty-two hours!

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 21078220 cubic inches would be around 23 feet tall.

Recreational maths with 21078220

21078220 backwards is 02287012
The number of decimal digits it has is: 8
The sum of 21078220's digits is 22
More coming soon!

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The information we have on file for 21078220 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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