30904447 has 12 divisors (see below), whose sum is σ = 36829296. Its totient is φ = 25841760.

The previous prime is 30904441. The next prime is 30904457. The reversal of 30904447 is 74440903.

It is not a de Polignac number, because 30904447 - 2⁷ = 30904319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30904441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5683 + ... + 9700.

It is an arithmetic number, because the mean of its divisors is an integer number (3069108).

Almost surely, 2^30904447 is an apocalyptic number.

30904447 is a deficient number, since it is larger than the sum of its proper divisors (5924849).

30904447 is a wasteful number, since it uses less digits than its factorization.

30904447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15438 (or 15431 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 30904447 is about 5559.1768275528. The cubic root of 30904447 is about 313.8149713863.

The spelling of 30904447 in words is "thirty million, nine hundred four thousand, four hundred forty-seven".