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Yes it is. 6 is the first perfect number, 28 is the second perfect number.

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Q: Is 28 a perfect number
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Related questions

What is the Perfect number and what is the perfect number after 28?

A perfect number is a number that is the sum of all its proper factors (that is all its factors excluding itself). The next perfect number after 28 is 496


Why is 28 a perfect number?

A number is perfect if all it's factors (barring itself) sum to make the original number. In this case, the factors of 28 are 1,2,4,7 and 14. Added up, these equal 28. Thus, 28 is a perfect number.


Is there a perfect number between 20 and 30?

28 is a perfect number.


When after 11 is there a perfect number?

The next perfect number after 11 is 28.


Is 29 a perfect number?

29 is not a perfect number - though 28, its predecessor, is.


Is 22 a perfect number or a near number?

22 is not a perfect number but 6, 28, 496 and 8128 are perfect numbers.


What is the next perfect number after 6?

The second perfect number after 6 is 28. The sum of the factors of 28, excluding itself, is 1 + 2 + 4 + 7 + 14 = 28.


How is 2002 a perfect number?

2002 is not a perfect number. The first four perfect numbers are 6, 28, 496, and 8128.


What is a perfect number greater than 22?

28


What is the second perfect number?

28


Is 25 a perfect number?

No, but 28 is...


Is the number 42 a perfect number?

No, it is not a perfect number. The first four known perfect numbers are 6, 28, 496 and 8,128.


What number between twenty and thirty is a perfect number?

28


Is 42 a perfect number?

Use the definition of a perfect number! Add the factors; if the sum of all the factors (excluding the number itself) is equal to the number, it is a perfect number, otherwise it isn't. (Actually, the only perfect numbers less than 100 are 6, and 28.)


What other number than 6 is a perfect number?

28 is a perfect number. Add the factors of the number, excluding the number itself. 28: 1 +2 +4 + 7 + 14 = 28. The sum of its factors is the same as the number! The next perfect numbers are 496, 8128, 33550336, 8589869056, 137438691328, 2305843008139952128, 2658455991569831744654692615953842176, and 191561942608236107294793378084303638130997321548169216. Chances are that you won't be using that!


How is 20 a perfect number?

It isn't a perfect number.A perfect number is a number which is the sum of its proper divisors (including 1, but excluding itself).The divisors of 20 are 1, 2, 4, 5, 10.1 + 2 + 4 + 5 + 10 = 22 => 20 is not a perfect number.An example of a perfect number is 28:The divisors of 28 are 1, 2, 4, 7, 141 + 2 + 4 + 7 + 14 = 28 => 28 is a perfect number.


Is 50 near a perfect number?

No, it is not near a perfect number. The first four known perfect numbers are 6, 28, 496 and 8,128.


What is the next perfect number after 28?

496


How do you find the perfect number between 20 and 30?

The number is 28.


Is 30 a perfect number?

No. The only perfect numbers below 100 are 6 and 28.


Is 34 a perfect number?

No. The only perfect numbers below 100 are 6, and 28.


Is 50 a perfect number?

No, the only perfect numbers under 100 are 6 and 28.


Is 28 a perfect abundant or deficient number?

it is perfect i believe the factors are 1,2,4,7,and 14


Why isn't 28 a square number?

28 is not a perfect square. A perfect square is an integer that is the square of another integer. 9 is a perfect square; it equal to 3 squared, or 3 X 3. Often, such numbers are called simply square numbers. While 28 is not a perfect square, it is a square number in the sense that it has a square root. by definition, the square root of 28 times itself equals 28.


Which of these numbers is a perfect number 4 6 1 0 2 2 2 8?

6 is the only perfect digit. The next perfect number is 28.

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