28630444 has 6 divisors (see below), whose sum is σ = 50103284. Its totient is φ = 14315220.

The previous prime is 28630429. The next prime is 28630451. The reversal of 28630444 is 44403682.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3578802 + ... + 3578809.

Almost surely, 2^28630444 is an apocalyptic number.

It is an amenable number.

28630444 is a deficient number, since it is larger than the sum of its proper divisors (21472840).

28630444 is a wasteful number, since it uses less digits than its factorization.

28630444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7157615 (or 7157613 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 28630444 is about 5350.7423783995. The cubic root of 28630444 is about 305.9210498757.

The spelling of 28630444 in words is "twenty-eight million, six hundred thirty thousand, four hundred forty-four".