30505044 has 12 divisors (see below), whose sum is σ = 71178464. Its totient is φ = 10168344.

The previous prime is 30505037. The next prime is 30505081. The reversal of 30505044 is 44050503.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 30505044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271032 + ... + 1271055.

Almost surely, 2^30505044 is an apocalyptic number.

It is an amenable number.

30505044 is an abundant number, since it is smaller than the sum of its proper divisors (40673420).

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

30505044 is a wasteful number, since it uses less digits than its factorization.

30505044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542094 (or 2542092 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 30505044 is about 5523.1371520179. The cubic root of 30505044 is about 312.4572109947.

Adding to 30505044 its reverse (44050503), we get a palindrome (74555547).

The spelling of 30505044 in words is "thirty million, five hundred five thousand, forty-four".