28663376 has 20 divisors (see below), whose sum is σ = 63469152. Its totient is φ = 12284256.

The previous prime is 28663367. The next prime is 28663409. The reversal of 28663376 is 67336682.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 127850 + ... + 128073.

Almost surely, 2^28663376 is an apocalyptic number.

It is an amenable number.

28663376 is an abundant number, since it is smaller than the sum of its proper divisors (34805776).

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

28663376 is a wasteful number, since it uses less digits than its factorization.

28663376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255938 (or 255932 counting only the distinct ones).

The product of its digits is 217728, while the sum is 41.

The square root of 28663376 is about 5353.8188239798. The cubic root of 28663376 is about 306.0382995620.

The spelling of 28663376 in words is "twenty-eight million, six hundred sixty-three thousand, three hundred seventy-six".