30904775 has 24 divisors (see below), whose sum is σ = 42841008. Its totient is φ = 21920000.

The previous prime is 30904771. The next prime is 30904781. The reversal of 30904775 is 57740903.

It is not a de Polignac number, because 30904775 - 2² = 30904771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30904771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9905 + ... + 12645.

It is an arithmetic number, because the mean of its divisors is an integer number (1785042).

Almost surely, 2^30904775 is an apocalyptic number.

30904775 is a deficient number, since it is larger than the sum of its proper divisors (11936233).

30904775 is a wasteful number, since it uses less digits than its factorization.

30904775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803 (or 2798 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 30904775 is about 5559.2063282451. The cubic root of 30904775 is about 313.8160815927.

The spelling of 30904775 in words is "thirty million, nine hundred four thousand, seven hundred seventy-five".