21989490

21,989,490 is an even composite number composed of five prime numbers multiplied together.

What does the number 21989490 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 32 divisors.

21989490 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 21989490:

2 × 3 × 5 × 227 × 3229

See below for interesting mathematical facts about the number 21989490 from the Numbermatics database.

Names of 21989490

Cardinal: 21989490 can be written as Twenty-one million, nine hundred eighty-nine thousand, four hundred ninety.

Scientific notation

Scientific notation: 2.198949 × 10⁷

Factors of 21989490

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 5
Sum of prime factors: 3466

Divisors of 21989490

Number of divisors d(n): 32
Complete list of divisors:
1 2 3 5 6 10 15 30 227 454 681 1135 1362 2270 3229 3405 6458 6810 9687 16145 19374 32290 48435 96870 732983 1465966 2198949 3664915 4397898 7329830 10994745 21989490
Sum of all divisors σ(n): 53023680
Sum of proper divisors (its aliquot sum) s(n): 31034190
21989490 is an abundant number, because the sum of its proper divisors (31034190) is greater than itself. Its abundance is 9044700

Bases of 21989490

Binary: 1010011111000100001110010₂
Hexadecimal: 0x14F8872
Base-36: D3B76

Squares and roots of 21989490

21989490 squared (21989490²) is 483537670460100
21989490 cubed (21989490³) is 10632746769205664349000
The square root of 21989490 is 4689.2952562193
The cube root of 21989490 is 280.1593056045

Scales and comparisons

How big is 21989490?

21,989,490 seconds is equal to 36 weeks, 2 days, 12 hours, 11 minutes, 30 seconds.
To count from 1 to 21,989,490 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 21989490 cubic inches would be around 23.3 feet tall.

Recreational maths with 21989490

21989490 backwards is 09498912
The number of decimal digits it has is: 8
The sum of 21989490's digits is 42
More coming soon!

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The information we have on file for 21989490 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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