30640442 has 16 divisors (see below), whose sum is σ = 52704960. Its totient is φ = 13087008.

The previous prime is 30640417. The next prime is 30640453. The reversal of 30640442 is 24404603.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734 + ... + 7862.

It is an arithmetic number, because the mean of its divisors is an integer number (3294060).

Almost surely, 2^30640442 is an apocalyptic number.

30640442 is a deficient number, since it is larger than the sum of its proper divisors (22064518).

30640442 is a wasteful number, since it uses less digits than its factorization.

30640442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7445.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 30640442 is about 5535.3809263681. The cubic root of 30640442 is about 312.9188138132.

The spelling of 30640442 in words is "thirty million, six hundred forty thousand, four hundred forty-two".