28364568 has 64 divisors (see below), whose sum is σ = 79056000. Its totient is φ = 8428032.

The previous prime is 28364521. The next prime is 28364591. The reversal of 28364568 is 86546382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5923 + ... + 9581.

It is an arithmetic number, because the mean of its divisors is an integer number (1235250).

Almost surely, 2^28364568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28364568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39528000).

28364568 is an abundant number, since it is smaller than the sum of its proper divisors (50691432).

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

28364568 is a wasteful number, since it uses less digits than its factorization.

28364568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3704 (or 3700 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 28364568 is about 5325.8396521112. The cubic root of 28364568 is about 304.9711268914.

The spelling of 28364568 in words is "twenty-eight million, three hundred sixty-four thousand, five hundred sixty-eight".