Is 20 a prime number?
Yes
No
It depends on the context
Not enough information
No – 20 is not a Prime Number.
Why No: 20 is not a prime number because it does not meet the prime criteria of having exactly two distinct positive divisors: 1 and itself. See Prime number checker.
Yes – 20 is a Composite Number.
Why Yes: 20 is a composite number because it has more than two distinct positive divisors. It has 1, 2, 4, 5, 10, and itself (20).
Property | Answer |
---|---|
Is 20 a prime number? | No |
Is 20 a composite number? | Yes |
Is 20 a perfect square? | No |
Factors of 20 | 1, 2, 4, 5, 10, 20 |
Multiples of 20 | 20, 40, 60, 80, 100, 120, 140, 160, 180, 200 |
Cube Root of 20 | 2.71 |
Square of 20 | 400 |
Square Root of 20 | 4.47 |
Is 20 a Perfect Square? | No |
Is 20 a Perfect Cube? | No |
Is 20 an Irrational number | No |
Is 20 a Rational number | Yes |
Is 20 a Real number | Yes |
Is 20 an Integer | Yes |
Is 20 a Natural number | Yes |
Is 20 a Whole number | Yes |
Is 20 an Even or odd number | Yes (20 is an even number) |
Is 20 an Ordinal number | Yes |
Is 20 a Complex number | Yes (as all real numbers are also complex numbers) |
The factors of 20 are 1, 2, 4, 5, 10, and 20. 20 is not a prime number because it is divisible by numbers other than 1 and itself, highlighting its composite nature. There are multiple factors of 20, making it clear that it is not a prime number.
20 is recognized as a composite number because it has more than two divisors: 1, 2, 4, 5, 10, and itself (20). This characteristic distinguishes it from prime numbers, which have exactly two divisors. The number 20, while it may hold significance in some cultural or numerical systems (such as being the basis for the vicesimal counting system in some cultures), is primarily noted in mathematics for its composite status. Its properties as an even, composite, and natural number make it a fundamental figure in various mathematical and conceptual frameworks.
Yes, 20 is an even composite number. It has multiple divisors (1, 2, 4, 5, 10, 20) and is divisible by 2, fitting the definitions of both even and composite.
Not every number in the 20s is composite. For example, 23 and 29 are prime numbers, having only two divisors: 1 and themselves.
Text prompt
Add Tone
10 Examples of Public speaking
20 Examples of Gas lighting
Is 20 a prime number?
Yes
No
It depends on the context
Not enough information
Which statement accurately describes 20?
20 is a prime number.
20 is a composite number.
20 has only two factors.
20 is neither prime nor composite.
Which number is a factor of 20?
7
9
4
11
If you multiply 20 by 2, what type of number is the result?
Prime
Composite
Zero
Undefined
What is the smallest prime factor of 20?
2
3
5
7
How can you determine if 20 is a composite number?
Check if it can be divided evenly by 1 and itself only.
Check if it can be divided by numbers other than 1 and itself.
Check if it is an even number.
Check if it is a single-digit number.
If you add 2 to 20, is the resulting number prime or composite?
Prime
Composite
Both
Neither
Which number less than 20 is also a composite number?
17
18
19
20
Is the number 20 a prime number or a composite number?
Prime
Composite
Neither
Both
Which of the following best describes the number 20?
Prime
Composite
Complex
Odd
Before you leave, take our quick quiz to enhance your learning!