30904420 has 24 divisors (see below), whose sum is σ = 65870784. Its totient is φ = 12176736.

The previous prime is 30904417. The next prime is 30904441. The reversal of 30904420 is 2440903.

It is a junction number, because it is equal to n+sod(n) for n = 30904391 and 30904400.

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, 10192 + ... + 12871.

It is an arithmetic number, because the mean of its divisors is an integer number (2744616).

Almost surely, 2^30904420 is an apocalyptic number.

It is an amenable number.

30904420 is an abundant number, since it is smaller than the sum of its proper divisors (34966364).

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

30904420 is a wasteful number, since it uses less digits than its factorization.

30904420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23139 (or 23137 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30904420 is about 5559.1743991352. The cubic root of 30904420 is about 313.8148799970.

The spelling of 30904420 in words is "thirty million, nine hundred four thousand, four hundred twenty".