30644442 has 24 divisors (see below), whose sum is σ = 66774240. Its totient is φ = 10156680.

The previous prime is 30644431. The next prime is 30644443. The reversal of 30644442 is 24444603.

It is not an unprimeable number, because it can be changed into a prime (30644443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1534 + ... + 7977.

It is an arithmetic number, because the mean of its divisors is an integer number (2782260).

Almost surely, 2^30644442 is an apocalyptic number.

30644442 is an abundant number, since it is smaller than the sum of its proper divisors (36129798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30644442 is a wasteful number, since it uses less digits than its factorization.

30644442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9698 (or 9695 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 30644442 is about 5535.7422266576. The cubic root of 30644442 is about 312.9324300310.

The spelling of 30644442 in words is "thirty million, six hundred forty-four thousand, four hundred forty-two".