728839828 has 24 divisors (see below), whose sum is σ = 1286936000. Its totient is φ = 361153728.

The previous prime is 728839819. The next prime is 728839843. The reversal of 728839828 is 828938827.

728839828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520273 + ... + 521671.

Almost surely, 2^728839828 is an apocalyptic number.

It is an amenable number.

728839828 is a deficient number, since it is larger than the sum of its proper divisors (558096172).

728839828 is a wasteful number, since it uses less digits than its factorization.

728839828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479 (or 2477 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 55.

The square root of 728839828 is about 26997.0336889074. The cubic root of 728839828 is about 899.9340807687.

The spelling of 728839828 in words is "seven hundred twenty-eight million, eight hundred thirty-nine thousand, eight hundred twenty-eight".