496.
500
There is only one Perfect Number within this range : 496. If 2ⁿ - 1 is prime then 2ⁿ⁻¹(2ⁿ - 1) is a perfect number. In this instance n = 5 then, 2⁴(2⁵ - 1) = 16 x 31 = 496...........and 31 is a prime number.
-50
(500 + 800) / 2 = 650 Therefore, the number that falls in between 500 and 800 is 650.
496.
420, 450, 480
To the nearest whole number is is 478.
500
500
360, 420 and 480 all have 24 factors.
500
There is only one Perfect Number within this range : 496. If 2ⁿ - 1 is prime then 2ⁿ⁻¹(2ⁿ - 1) is a perfect number. In this instance n = 5 then, 2⁴(2⁵ - 1) = 16 x 31 = 496...........and 31 is a prime number.
360, 420 and 480 each have 24 factors.
100
It would be 500.
500-20 = 480