2828

2828 = 2 x 2 x 7 x 101.

2828 is a value of n such that n(n + 8) is a palindrome (A028567): 2828 x 2836 = 8020208.

2828 is the number of lines that pass through exactly three points of an 18 x 18 grid of points (A018810).

2828 is the number of tatami tilings of a 6 x 9 grid (with monomers allowed) (A192092).

2828 is the sum of seven positive 7th powers (A003374): 2828 = 3⁷ + 2⁷ + 2⁷ + 2⁷ + 2⁷ + 2⁷ + 1⁷.

2828 divides 41²⁰ - 1.

Source: What's Special About This Number?