30938136 has 32 divisors (see below), whose sum is σ = 77533440. Its totient is φ = 10287648.

The previous prime is 30938111. The next prime is 30938153. The reversal of 30938136 is 63183903.

It is a junction number, because it is equal to n+sod(n) for n = 30938097 and 30938106.

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, 10365 + ... + 13011.

It is an arithmetic number, because the mean of its divisors is an integer number (2422920).

Almost surely, 2^30938136 is an apocalyptic number.

It is an amenable number.

30938136 is an abundant number, since it is smaller than the sum of its proper divisors (46595304).

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

30938136 is a wasteful number, since it uses less digits than its factorization.

30938136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3143 (or 3139 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 30938136 is about 5562.2060371763. The cubic root of 30938136 is about 313.9289600876.

The spelling of 30938136 in words is "thirty million, nine hundred thirty-eight thousand, one hundred thirty-six".