21420340

21,420,340 is an even composite number composed of four prime numbers multiplied together.

What does the number 21420340 look like?

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

21420340 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 21420340:

2² × 5 × 17 × 251²

(2 × 2 × 5 × 17 × 251 × 251)

See below for interesting mathematical facts about the number 21420340 from the Numbermatics database.

Names of 21420340

Cardinal: 21420340 can be written as Twenty-one million, four hundred twenty thousand, three hundred forty.

Scientific notation

Scientific notation: 2.142034 × 10⁷

Factors of 21420340

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 275

Divisors of 21420340

Number of divisors d(n): 36
Complete list of divisors:
1 2 4 5 10 17 20 34 68 85 170 251 340 502 1004 1255 2510 4267 5020 8534 17068 21335 42670 63001 85340 126002 252004 315005 630010 1071017 1260020 2142034 4284068 5355085 10710170 21420340
Sum of all divisors σ(n): 47819268
Sum of proper divisors (its aliquot sum) s(n): 26398928
21420340 is an abundant number, because the sum of its proper divisors (26398928) is greater than itself. Its abundance is 4978588

Bases of 21420340

Binary: 1010001101101100100110100₂
Hexadecimal: 0x146D934
Base-36: CR41G

Squares and roots of 21420340

21420340 squared (21420340²) is 458830965715600
21420340 cubed (21420340³) is 9828315288156495304000
The square root of 21420340 is 4628.2113175611
The cube root of 21420340 is 277.7210423979

Scales and comparisons

How big is 21420340?

21,420,340 seconds is equal to 35 weeks, 2 days, 22 hours, 5 minutes, 40 seconds.
To count from 1 to 21,420,340 would take you about twenty-one 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 21420340 cubic inches would be around 23.1 feet tall.

Recreational maths with 21420340

21420340 backwards is 04302412
The number of decimal digits it has is: 8
The sum of 21420340's digits is 16
More coming soon!

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The information we have on file for 21420340 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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