21197840

21,197,840 is an even composite number composed of four prime numbers multiplied together.

What does the number 21197840 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 40 divisors.

21197840 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty divisors.

Prime factorization of 21197840:

2⁴ × 5 × 29 × 9137

(2 × 2 × 2 × 2 × 5 × 29 × 9137)

See below for interesting mathematical facts about the number 21197840 from the Numbermatics database.

Names of 21197840

Cardinal: 21197840 can be written as Twenty-one million, one hundred ninety-seven thousand, eight hundred forty.

Scientific notation

Scientific notation: 2.119784 × 10⁷

Factors of 21197840

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 7
Sum of prime factors: 9173

Divisors of 21197840

Number of divisors d(n): 40
Complete list of divisors:
1 2 4 5 8 10 16 20 29 40 58 80 116 145 232 290 464 580 1160 2320 9137 18274 36548 45685 73096 91370 146192 182740 264973 365480 529946 730960 1059892 1324865 2119784 2649730 4239568 5299460 10598920 21197840
Sum of all divisors σ(n): 50990040
Sum of proper divisors (its aliquot sum) s(n): 29792200
21197840 is an abundant number, because the sum of its proper divisors (29792200) is greater than itself. Its abundance is 8594360

Bases of 21197840

Binary: 1010000110111010000010000₂
Hexadecimal: 0x1437410
Base-36: CMCCW

Squares and roots of 21197840

21197840 squared (21197840²) is 449348420665600
21197840 cubed (21197840³) is 9525215925522082304000
The square root of 21197840 is 4604.1112063025
The cube root of 21197840 is 276.7561008265

Scales and comparisons

How big is 21197840?

21,197,840 seconds is equal to 35 weeks, 8 hours, 17 minutes, 20 seconds.
To count from 1 to 21,197,840 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 21197840 cubic inches would be around 23.1 feet tall.

Recreational maths with 21197840

21197840 backwards is 04879112
The number of decimal digits it has is: 8
The sum of 21197840's digits is 32
More coming soon!

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The information we have on file for 21197840 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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