21979040

21,979,040 is an even composite number composed of three prime numbers multiplied together.

What does the number 21979040 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 24 divisors.

21979040 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 21979040:

2⁵ × 5 × 137369

(2 × 2 × 2 × 2 × 2 × 5 × 137369)

See below for interesting mathematical facts about the number 21979040 from the Numbermatics database.

Names of 21979040

Cardinal: 21979040 can be written as Twenty-one million, nine hundred seventy-nine thousand and forty.

Scientific notation

Scientific notation: 2.197904 × 10⁷

Factors of 21979040

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 7
Sum of prime factors: 137376

Divisors of 21979040

Number of divisors d(n): 24
Complete list of divisors:
1 2 4 5 8 10 16 20 32 40 80 160 137369 274738 549476 686845 1098952 1373690 2197904 2747380 4395808 5494760 10989520 21979040
Sum of all divisors σ(n): 51925860
Sum of proper divisors (its aliquot sum) s(n): 29946820
21979040 is an abundant number, because the sum of its proper divisors (29946820) is greater than itself. Its abundance is 7967780

Bases of 21979040

Binary: 1010011110101111110100000₂
Hexadecimal: 0x14F5FA0
Base-36: D334W

Squares and roots of 21979040

21979040 squared (21979040²) is 483078199321600
21979040 cubed (21979040³) is 10617595066017419264000
The square root of 21979040 is 4688.1808838825
The cube root of 21979040 is 280.1149188145

Scales and comparisons

How big is 21979040?

21,979,040 seconds is equal to 36 weeks, 2 days, 9 hours, 17 minutes, 20 seconds.
To count from 1 to 21,979,040 would take you about two weeks!

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 21979040 cubic inches would be around 23.3 feet tall.

Recreational maths with 21979040

21979040 backwards is 04097912
21979040 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21979040's digits is 32
More coming soon!

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The information we have on file for 21979040 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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