28393896 has 16 divisors (see below), whose sum is σ = 70984800. Its totient is φ = 9464624.

The previous prime is 28393877. The next prime is 28393903. The reversal of 28393896 is 69839382.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591516 + ... + 591563.

It is an arithmetic number, because the mean of its divisors is an integer number (4436550).

Almost surely, 2^28393896 is an apocalyptic number.

It is an amenable number.

28393896 is an abundant number, since it is smaller than the sum of its proper divisors (42590904).

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

28393896 is a wasteful number, since it uses less digits than its factorization.

28393896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183088 (or 1183084 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 28393896 is about 5328.5923094191. The cubic root of 28393896 is about 305.0762006148.

The spelling of 28393896 in words is "twenty-eight million, three hundred ninety-three thousand, eight hundred ninety-six".