30745432 has 8 divisors (see below), whose sum is σ = 57647700. Its totient is φ = 15372712.

The previous prime is 30745427. The next prime is 30745433. The reversal of 30745432 is 23454703.

It is a tau number, because it is divible by the number of its divisors (8).

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 30745432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30745433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1921582 + ... + 1921597.

Almost surely, 2^30745432 is an apocalyptic number.

It is an amenable number.

30745432 is a deficient number, since it is larger than the sum of its proper divisors (26902268).

30745432 is a wasteful number, since it uses less digits than its factorization.

30745432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3843185 (or 3843181 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 30745432 is about 5544.8563552179. The cubic root of 30745432 is about 313.2758135953.

The spelling of 30745432 in words is "thirty million, seven hundred forty-five thousand, four hundred thirty-two".