21478040

21,478,040 is an even composite number composed of four prime numbers multiplied together.

What does the number 21478040 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 32 divisors.

21478040 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 21478040:

2³ × 5 × 31 × 17321

(2 × 2 × 2 × 5 × 31 × 17321)

See below for interesting mathematical facts about the number 21478040 from the Numbermatics database.

Names of 21478040

Cardinal: 21478040 can be written as Twenty-one million, four hundred seventy-eight thousand and forty.

Scientific notation

Scientific notation: 2.147804 × 10⁷

Factors of 21478040

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 17359

Divisors of 21478040

Number of divisors d(n): 32
Complete list of divisors:
1 2 4 5 8 10 20 31 40 62 124 155 248 310 620 1240 17321 34642 69284 86605 138568 173210 346420 536951 692840 1073902 2147804 2684755 4295608 5369510 10739020 21478040
Sum of all divisors σ(n): 49887360
Sum of proper divisors (its aliquot sum) s(n): 28409320
21478040 is an abundant number, because the sum of its proper divisors (28409320) is greater than itself. Its abundance is 6931280

Bases of 21478040

Binary: 1010001111011101010011000₂
Hexadecimal: 0x147BA98
Base-36: CSCK8

Squares and roots of 21478040

21478040 squared (21478040²) is 461306202241600
21478040 cubed (21478040³) is 9907953063993174464000
The square root of 21478040 is 4634.4406350713
The cube root of 21478040 is 277.9701846809

Scales and comparisons

How big is 21478040?

21,478,040 seconds is equal to 35 weeks, 3 days, 14 hours, 7 minutes, 20 seconds.
To count from 1 to 21,478,040 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 21478040 cubic inches would be around 23.2 feet tall.

Recreational maths with 21478040

21478040 backwards is 04087412
The number of decimal digits it has is: 8
The sum of 21478040's digits is 26
More coming soon!

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The information we have on file for 21478040 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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