30948738 has 32 divisors (see below), whose sum is σ = 65862720. Its totient is φ = 9661440.

The previous prime is 30948737. The next prime is 30948769. The reversal of 30948738 is 83784903.

It is a self number, because there is not a number n which added to its sum of digits gives 30948738.

It is not an unprimeable number, because it can be changed into a prime (30948737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23953 + ... + 25211.

It is an arithmetic number, because the mean of its divisors is an integer number (2058210).

Almost surely, 2^30948738 is an apocalyptic number.

30948738 is an abundant number, since it is smaller than the sum of its proper divisors (34913982).

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

30948738 is a wasteful number, since it uses less digits than its factorization.

30948738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 30948738 is about 5563.1589946720. The cubic root of 30948738 is about 313.9648154553.

The spelling of 30948738 in words is "thirty million, nine hundred forty-eight thousand, seven hundred thirty-eight".