30538072 has 8 divisors (see below), whose sum is σ = 57258900. Its totient is φ = 15269032.

The previous prime is 30538063. The next prime is 30538093. The reversal of 30538072 is 27083503.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 30538072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1908622 + ... + 1908637.

Almost surely, 2^30538072 is an apocalyptic number.

It is an amenable number.

30538072 is a deficient number, since it is larger than the sum of its proper divisors (26720828).

30538072 is a wasteful number, since it uses less digits than its factorization.

30538072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3817265 (or 3817261 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 30538072 is about 5526.1263105362. The cubic root of 30538072 is about 312.5699367738.

The spelling of 30538072 in words is "thirty million, five hundred thirty-eight thousand, seventy-two".