30905294 has 16 divisors (see below), whose sum is σ = 53056608. Its totient is φ = 13226112.

The previous prime is 30905279. The next prime is 30905311. The reversal of 30905294 is 49250903.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 30905294.

It is a congruent number.

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, 13394 + ... + 15530.

It is an arithmetic number, because the mean of its divisors is an integer number (3316038).

Almost surely, 2^30905294 is an apocalyptic number.

30905294 is a deficient number, since it is larger than the sum of its proper divisors (22151314).

30905294 is a wasteful number, since it uses less digits than its factorization.

30905294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3179.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 30905294 is about 5559.2530073743. The cubic root of 30905294 is about 313.8178382752.

The spelling of 30905294 in words is "thirty million, nine hundred five thousand, two hundred ninety-four".