813552728 has 16 divisors (see below), whose sum is σ = 1532076000. Its totient is φ = 404999136.

The previous prime is 813552679. The next prime is 813552743. The reversal of 813552728 is 827255318.

813552728 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 3 ways as a sum of consecutive naturals, for example, 220208 + ... + 223871.

It is an arithmetic number, because the mean of its divisors is an integer number (95754750).

Almost surely, 2^813552728 is an apocalyptic number.

It is an amenable number.

813552728 is a deficient number, since it is larger than the sum of its proper divisors (718523272).

813552728 is a wasteful number, since it uses less digits than its factorization.

813552728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444314 (or 444310 counting only the distinct ones).

The product of its digits is 134400, while the sum is 41.

The square root of 813552728 is about 28522.8457205798. The cubic root of 813552728 is about 933.5306223529.

The spelling of 813552728 in words is "eight hundred thirteen million, five hundred fifty-two thousand, seven hundred twenty-eight".