28368774 has 24 divisors (see below), whose sum is σ = 70246800. Its totient is φ = 8105328.

The previous prime is 28368731. The next prime is 28368787. The reversal of 28368774 is 47786382.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112449 + ... + 112700.

It is an arithmetic number, because the mean of its divisors is an integer number (2926950).

Almost surely, 2^28368774 is an apocalyptic number.

28368774 is an abundant number, since it is smaller than the sum of its proper divisors (41878026).

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

28368774 is a wasteful number, since it uses less digits than its factorization.

28368774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225164 (or 225161 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 28368774 is about 5326.2345047885. The cubic root of 28368774 is about 304.9862002177.

The spelling of 28368774 in words is "twenty-eight million, three hundred sixty-eight thousand, seven hundred seventy-four".