28930444 has 24 divisors (see below), whose sum is σ = 51565248. Its totient is φ = 14200320.

The previous prime is 28930361. The next prime is 28930457. The reversal of 28930444 is 44403982.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 66909 + ... + 67339.

It is an arithmetic number, because the mean of its divisors is an integer number (2148552).

Almost surely, 2^28930444 is an apocalyptic number.

It is an amenable number.

28930444 is a deficient number, since it is larger than the sum of its proper divisors (22634804).

28930444 is a wasteful number, since it uses less digits than its factorization.

28930444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 28930444 is about 5378.7028175946. The cubic root of 28930444 is about 306.9858559622.

The spelling of 28930444 in words is "twenty-eight million, nine hundred thirty thousand, four hundred forty-four".