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If the sum of all a number's factors (factors that are smaller than the number itself) is equal to the number itself, the number is said to be "perfect".
For example, the factors of 6 (excluding 6 itself) are 1, 2, and 3; and the sum of these numbers is exactly 6.
The smallest perfect numbers are 6, 28, 496, 8128.
It isn't known whether the set of perfect numbers is finite or infinite. Also, it isn't known whether there are any odd perfect number; all known perfect numbers are even.
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What are the different types of numbers?
irrational numbers odd numbers even numbers whole numbers prime numbers composite numbers counting numbers
Are there any prine numbers that are square numbers?
There are no prime numbers that are square numbers
Are rational numbers whole numbers?
The set of rational numbers includes all whole numbers, so SOME rational numbers will also be whole number. But not all rational numbers are whole numbers. So, as a rule, no, rational numbers are not whole numbers.
What are the set of the real number?
the set of real numbers are the numbers which make the entire number system. they include all the different number systems like integers,rational numbers,irrational numbers,whole numbers & natural numbers.
What is the differences among integers rational numbers real numbers and irrational numbers?
Integers are whole numbers. They are the counting numbers, 0 and the corresponding negative numbers. Rational numbers are numbers that can be expressed as a ratio of two integers (the second one being non-zero). Irrational numbers are numbers that are not rational numbers. Rational and irrational number together form the set of real numbers.
