30904934 has 4 divisors (see below), whose sum is σ = 46357404. Its totient is φ = 15452466.

The previous prime is 30904933. The next prime is 30904943. The reversal of 30904934 is 43940903.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×30904934² = 1910229891088712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30904934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30904933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7726232 + ... + 7726235.

It is an arithmetic number, because the mean of its divisors is an integer number (11589351).

Almost surely, 2^30904934 is an apocalyptic number.

30904934 is a deficient number, since it is larger than the sum of its proper divisors (15452470).

30904934 is a wasteful number, since it uses less digits than its factorization.

30904934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15452469.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 30904934 is about 5559.2206288292. The cubic root of 30904934 is about 313.8166197692.

The spelling of 30904934 in words is "thirty million, nine hundred four thousand, nine hundred thirty-four".