21974

21,974 is an even composite number composed of two prime numbers multiplied together.

What does the number 21974 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

21974 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 21974:

2 × 10987

See below for interesting mathematical facts about the number 21974 from the Numbermatics database.

Names of 21974

Cardinal: 21974 can be written as Twenty-one thousand, nine hundred seventy-four.

Scientific notation

Scientific notation: 2.1974 × 10⁴

Factors of 21974

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 2
Sum of prime factors: 10989

Divisors of 21974

Number of divisors d(n): 4
Complete list of divisors:
1 2 10987 21974
Sum of all divisors σ(n): 32964
Sum of proper divisors (its aliquot sum) s(n): 10990
21974 is a deficient number, because the sum of its proper divisors (10990) is less than itself. Its deficiency is 10984

Bases of 21974

Binary: 101010111010110₂
Hexadecimal: 0x55D6
Base-36: GYE

Squares and roots of 21974

21974 squared (21974²) is 482856676
21974 cubed (21974³) is 10610292598424
The square root of 21974 is 148.2362978491
The cube root of 21974 is 28.0093506185

Scales and comparisons

How big is 21974?

21,974 seconds is equal to 6 hours, 6 minutes, 14 seconds.
To count from 1 to 21,974 would take you about six 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 21974 cubic inches would be around 2.3 feet tall.

Recreational maths with 21974

21974 backwards is 47912
The number of decimal digits it has is: 5
The sum of 21974's digits is 23
More coming soon!

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The information we have on file for 21974 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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