30031444 has 12 divisors (see below), whose sum is σ = 52756704. Its totient is φ = 14958104.

The previous prime is 30031439. The next prime is 30031447. The reversal of 30031444 is 44413003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031447) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13222 + ... + 15325.

It is an arithmetic number, because the mean of its divisors is an integer number (4396392).

Almost surely, 2^30031444 is an apocalyptic number.

It is an amenable number.

30031444 is a deficient number, since it is larger than the sum of its proper divisors (22725260).

30031444 is a wasteful number, since it uses less digits than its factorization.

30031444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28814 (or 28812 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 30031444 is about 5480.0952546466. The cubic root of 30031444 is about 310.8317724879.

Adding to 30031444 its reverse (44413003), we get a palindrome (74444447).

The spelling of 30031444 in words is "thirty million, thirty-one thousand, four hundred forty-four".