30904743 has 8 divisors (see below), whose sum is σ = 41232256. Its totient is φ = 20590200.

The previous prime is 30904733. The next prime is 30904751. The reversal of 30904743 is 34740903.

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

It is not a de Polignac number, because 30904743 - 2⁵ = 30904711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30904743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30904723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6528 + ... + 10218.

It is an arithmetic number, because the mean of its divisors is an integer number (5154032).

Almost surely, 2^30904743 is an apocalyptic number.

30904743 is a deficient number, since it is larger than the sum of its proper divisors (10327513).

30904743 is a wasteful number, since it uses less digits than its factorization.

30904743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6485.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 30904743 is about 5559.2034501356. The cubic root of 30904743 is about 313.8159732802.

The spelling of 30904743 in words is "thirty million, nine hundred four thousand, seven hundred forty-three".