Question: What Can Equal 28?

Is 23 a prime or composite number?

When a number has more than two factors it is called a composite number.

Here are the first few prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, etc..

What are the factor of 30?

30 is a composite number. 30 = 1 x 30, 2 x 15, 3 x 10, or 5 x 6. Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30. Prime factorization: 30 = 2 x 3 x 5.

What can equal 24?

Answer and Explanation: The factor pairs of 24 are: 1 x 24, 2 x 12, 3 x 8, and 4 x 6.

What’s a factor of 24?

Table of Factors and MultiplesFactorsMultiples1, 2, 3, 4, 6, 8, 12, 24241201, 5, 25251251, 2, 13, 26261301, 3, 9, 272713541 more rows

What are 28 factors?

The factors of 28 are the numbers, which on multiplication in pairs results in the original number. These factors are 1,2,4,7,14 and 28. Since, 2 x 14 = 28, therefore (2,14) is a pair factor of number 28.

Is 28 a perfect number?

Perfect number, a positive integer that is equal to the sum of its proper divisors. The smallest perfect number is 6, which is the sum of 1, 2, and 3. Other perfect numbers are 28, 496, and 8,128.

Is 0 prime or composite?

Zero is neither prime nor composite. Since any number times zero equals zero, there are an infinite number of factors for a product of zero. A composite number must have a finite number of factors. One is also neither prime nor composite.

What two numbers equal 60?

60 is a composite number. 60 = 1 x 60, 2 x 30, 3 x 20, 4 x 15, 5 x 12, or 6 x 10.

Why is 28 a perfect number?

In number theory, a perfect number is a positive integer that is equal to the sum of its positive divisors, excluding the number itself. For instance, 6 has divisors 1, 2 and 3 (excluding itself), and 1 + 2 + 3 = 6, so 6 is a perfect number. … For instance, 28 is perfect as 1 + 2 + 4 + 7 + 14 + 28 = 56 = 2 × 28.

What is the weirdest number?

Examples. The smallest weird number is 70. Its proper divisors are 1, 2, 5, 7, 10, 14, and 35; these sum to 74, but no subset of these sums to 70. The number 12, for example, is abundant but not weird, because the proper divisors of 12 are 1, 2, 3, 4, and 6, which sum to 16; but 2 + 4 + 6 = 12.

Is 27 prime or composite?

Is 27 a prime number? No. 27 is divisible by other numbers (3 and 9), so it is not prime. The factors of 27 are 1, 3, 9, and 27, so it is not prime.

What two numbers make 28?

28 is a composite number. 28 = 1 x 28, 2 x 14, or 4 x 7. Factors of 28: 1, 2, 4, 7, 14, 28. Prime factorization: 28 = 2 x 2 x 7, which can also be written 28 = 2² x 7.

What can equal to 20?

If you can use more than one of a number, than 2 x 2 x 5 = 20. If you’re asking for 3 different numbers, than 1 x 4 x 5 = 20 or 1 x 2 x 10 = 20.

Is 28 a composite number?

If the number has more than two factors, then it is composite….Definitions.factors of 20:1 x 20, 2 x 10, 4 x 520 is compositefactors of 26:1 x 26, 2 x 1326 is compositefactors of 27:1 x 27, 3 x 927 is compositefactors of 28:1 x 28, 2 x 14, 4 x 728 is compositefactors of 29:1 x 2929 is prime5 more rows

Why is 7 God’s perfect number?

Seven is the number of completeness and perfection (both physical and spiritual). It derives much of its meaning from being tied directly to God’s creation of all things. … The word ‘created’ is used 7 times describing God’s creative work (Genesis 1:1, 21, 27 three times; 2:3; 2:4).