21982940

21,982,940 is an even composite number composed of five prime numbers multiplied together.

What does the number 21982940 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 48 divisors.

21982940 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 21982940:

2² × 5 × 7 × 23 × 6827

(2 × 2 × 5 × 7 × 23 × 6827)

See below for interesting mathematical facts about the number 21982940 from the Numbermatics database.

Names of 21982940

Cardinal: 21982940 can be written as Twenty-one million, nine hundred eighty-two thousand, nine hundred forty.

Scientific notation

Scientific notation: 2.198294 × 10⁷

Factors of 21982940

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 6864

Divisors of 21982940

Number of divisors d(n): 48
Complete list of divisors:
1 2 4 5 7 10 14 20 23 28 35 46 70 92 115 140 161 230 322 460 644 805 1610 3220 6827 13654 27308 34135 47789 68270 95578 136540 157021 191156 238945 314042 477890 628084 785105 955780 1099147 1570210 2198294 3140420 4396588 5495735 10991470 21982940
Sum of all divisors σ(n): 55060992
Sum of proper divisors (its aliquot sum) s(n): 33078052
21982940 is an abundant number, because the sum of its proper divisors (33078052) is greater than itself. Its abundance is 11095112

Bases of 21982940

Binary: 1010011110110111011011100₂
Hexadecimal: 0x14F6EDC
Base-36: D3658

Squares and roots of 21982940

21982940 squared (21982940²) is 483249651043600
21982940 cubed (21982940³) is 10623248083912396184000
The square root of 21982940 is 4688.5968050153
The cube root of 21982940 is 280.1314858645

Scales and comparisons

How big is 21982940?

21,982,940 seconds is equal to 36 weeks, 2 days, 10 hours, 22 minutes, 20 seconds.
To count from 1 to 21,982,940 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 21982940 cubic inches would be around 23.3 feet tall.

Recreational maths with 21982940

21982940 backwards is 04928912
21982940 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21982940's digits is 35
More coming soon!

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The information we have on file for 21982940 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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