30405244 has 12 divisors (see below), whose sum is σ = 56009800. Its totient is φ = 14402448.

The previous prime is 30405239. The next prime is 30405247. The reversal of 30405244 is 44250403.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30405247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199959 + ... + 200110.

Almost surely, 2^30405244 is an apocalyptic number.

It is an amenable number.

30405244 is a deficient number, since it is larger than the sum of its proper divisors (25604556).

30405244 is a wasteful number, since it uses less digits than its factorization.

30405244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400092 (or 400090 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 30405244 is about 5514.0950300117. The cubic root of 30405244 is about 312.1160947534.

Adding to 30405244 its reverse (44250403), we get a palindrome (74655647).

The spelling of 30405244 in words is "thirty million, four hundred five thousand, two hundred forty-four".