21430738

21,430,738 is an even composite number composed of three prime numbers multiplied together.

What does the number 21430738 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

21430738 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 21430738:

2 × 7² × 218681

(2 × 7 × 7 × 218681)

See below for interesting mathematical facts about the number 21430738 from the Numbermatics database.

Names of 21430738

Cardinal: 21430738 can be written as Twenty-one million, four hundred thirty thousand, seven hundred thirty-eight.

Scientific notation

Scientific notation: 2.1430738 × 10⁷

Factors of 21430738

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 218690

Divisors of 21430738

Number of divisors d(n): 12
Complete list of divisors:
1 2 7 14 49 98 218681 437362 1530767 3061534 10715369 21430738
Sum of all divisors σ(n): 37394622
Sum of proper divisors (its aliquot sum) s(n): 15963884
21430738 is a deficient number, because the sum of its proper divisors (15963884) is less than itself. Its deficiency is 5466854

Bases of 21430738

Binary: 1010001110000000111010010₂
Hexadecimal: 0x14701D2
Base-36: CRC2A

Squares and roots of 21430738

21430738 squared (21430738²) is 459276531224644
21430738 cubed (21430738³) is 9842635010224164707272
The square root of 21430738 is 4629.3345094085
The cube root of 21430738 is 277.7659728435

Scales and comparisons

How big is 21430738?

21,430,738 seconds is equal to 35 weeks, 3 days, 58 minutes, 58 seconds.
To count from 1 to 21,430,738 would take you about twenty-eight minutes!

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 21430738 cubic inches would be around 23.1 feet tall.

Recreational maths with 21430738

21430738 backwards is 83703412
The number of decimal digits it has is: 8
The sum of 21430738's digits is 28
More coming soon!

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The information we have on file for 21430738 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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