30745892 has 12 divisors (see below), whose sum is σ = 54001500. Its totient is φ = 15316896.

The previous prime is 30745889. The next prime is 30745901. The reversal of 30745892 is 29854703.

It can be written as a sum of positive squares in 2 ways, for example, as 6677056 + 24068836 = 2584^2 + 4906^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12767 + ... + 14982.

It is an arithmetic number, because the mean of its divisors is an integer number (4500125).

Almost surely, 2^30745892 is an apocalyptic number.

It is an amenable number.

30745892 is a deficient number, since it is larger than the sum of its proper divisors (23255608).

30745892 is a wasteful number, since it uses less digits than its factorization.

30745892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28030 (or 28028 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 30745892 is about 5544.8978349470. The cubic root of 30745892 is about 313.2773759537.

The spelling of 30745892 in words is "thirty million, seven hundred forty-five thousand, eight hundred ninety-two".