30445942 has 16 divisors (see below), whose sum is σ = 49098240. Its totient is φ = 14114088.

The previous prime is 30445927. The next prime is 30445949. The reversal of 30445942 is 24954403.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30445949) 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, 6738 + ... + 10309.

It is an arithmetic number, because the mean of its divisors is an integer number (3068640).

Almost surely, 2^30445942 is an apocalyptic number.

30445942 is a deficient number, since it is larger than the sum of its proper divisors (18652298).

30445942 is a wasteful number, since it uses less digits than its factorization.

30445942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17115.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 30445942 is about 5517.7841567064. The cubic root of 30445942 is about 312.2552904518.

The spelling of 30445942 in words is "thirty million, four hundred forty-five thousand, nine hundred forty-two".