30676728 has 16 divisors (see below), whose sum is σ = 76691880. Its totient is φ = 10225568.

The previous prime is 30676703. The next prime is 30676739. The reversal of 30676728 is 82767603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639075 + ... + 639122.

Almost surely, 2^30676728 is an apocalyptic number.

It is an amenable number.

30676728 is an abundant number, since it is smaller than the sum of its proper divisors (46015152).

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

30676728 is a wasteful number, since it uses less digits than its factorization.

30676728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278206 (or 1278202 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 30676728 is about 5538.6575990938. The cubic root of 30676728 is about 313.0422899780.

The spelling of 30676728 in words is "thirty million, six hundred seventy-six thousand, seven hundred twenty-eight".