30904838 has 8 divisors (see below), whose sum is σ = 46381032. Its totient is φ = 15444496.

The previous prime is 30904829. The next prime is 30904859. The reversal of 30904838 is 83840903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 30904798 and 30904807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4706 + ... + 9162.

It is an arithmetic number, because the mean of its divisors is an integer number (5797629).

Almost surely, 2^30904838 is an apocalyptic number.

30904838 is a deficient number, since it is larger than the sum of its proper divisors (15476194).

30904838 is a wasteful number, since it uses less digits than its factorization.

30904838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7926.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 30904838 is about 5559.2119945186. The cubic root of 30904838 is about 313.8162948327.

The spelling of 30904838 in words is "thirty million, nine hundred four thousand, eight hundred thirty-eight".