728265366 has 12 divisors (see below), whose sum is σ = 1577908332. Its totient is φ = 242755116.

The previous prime is 728265347. The next prime is 728265401. The reversal of 728265366 is 663562827.

It is a happy number.

728265366 is a `hidden beast` number, since 7 + 28 + 265 + 366 = 666.

728265366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×728265366² = 1060740886630227912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20229576 + ... + 20229611.

It is an arithmetic number, because the mean of its divisors is an integer number (131492361).

Almost surely, 2^728265366 is an apocalyptic number.

728265366 is an abundant number, since it is smaller than the sum of its proper divisors (849642966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728265366 is a wasteful number, since it uses less digits than its factorization.

728265366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40459195 (or 40459192 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 728265366 is about 26986.3922375704. The cubic root of 728265366 is about 899.6975798729.

The spelling of 728265366 in words is "seven hundred twenty-eight million, two hundred sixty-five thousand, three hundred sixty-six".