21382138

21,382,138 is an even composite number composed of four prime numbers multiplied together.

What does the number 21382138 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

21382138 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 21382138:

2 × 73 × 137 × 1069

See below for interesting mathematical facts about the number 21382138 from the Numbermatics database.

Names of 21382138

Cardinal: 21382138 can be written as Twenty-one million, three hundred eighty-two thousand, one hundred thirty-eight.

Scientific notation

Scientific notation: 2.1382138 × 10⁷

Factors of 21382138

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 1281

Divisors of 21382138

Number of divisors d(n): 16
Complete list of divisors:
1 2 73 137 146 274 1069 2138 10001 20002 78037 146453 156074 292906 10691069 21382138
Sum of all divisors σ(n): 32780520
Sum of proper divisors (its aliquot sum) s(n): 11398382
21382138 is a deficient number, because the sum of its proper divisors (11398382) is less than itself. Its deficiency is 9983756

Bases of 21382138

Binary: 1010001100100001111111010₂
Hexadecimal: 0x14643FA
Base-36: CQAKA

Squares and roots of 21382138

21382138 squared (21382138²) is 457195825451044
21382138 cubed (21382138³) is 9775824232818135052072
The square root of 21382138 is 4624.0823954597
The cube root of 21382138 is 277.5558440761

Scales and comparisons

How big is 21382138?

21,382,138 seconds is equal to 35 weeks, 2 days, 11 hours, 28 minutes, 58 seconds.
To count from 1 to 21,382,138 would take you about five 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 21382138 cubic inches would be around 23.1 feet tall.

Recreational maths with 21382138

21382138 backwards is 83128312
The number of decimal digits it has is: 8
The sum of 21382138's digits is 28
More coming soon!

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The information we have on file for 21382138 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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