1782

1782 = 2 x 3 x 3 x 3 x 3 x 11.

1782 is a heptagonal number.

1782 is the smallest number that is three times the sum of all the two-digit numbers that can be made using the digits of 1782.

1782 is the smallest number n such that n and 4n (7128) are anagrams.

1782 is 3366 in base 8.

1782 divides 89¹⁸ - 1.

Source: Number Gossip