30644042 has 32 divisors (see below), whose sum is σ = 54552960. Its totient is φ = 12726720.

The previous prime is 30643997. The next prime is 30644059. The reversal of 30644042 is 24044603.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30643999 and 30644017.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30683 + ... + 31665.

It is an arithmetic number, because the mean of its divisors is an integer number (1704780).

Almost surely, 2^30644042 is an apocalyptic number.

30644042 is a deficient number, since it is larger than the sum of its proper divisors (23908918).

30644042 is a wasteful number, since it uses less digits than its factorization.

30644042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118.

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

The square root of 30644042 is about 5535.7060976898. The cubic root of 30644042 is about 312.9310684625.

Adding to 30644042 its reverse (24044603), we get a palindrome (54688645).

The spelling of 30644042 in words is "thirty million, six hundred forty-four thousand, forty-two".