28368684 has 48 divisors (see below), whose sum is σ = 73983840. Its totient is φ = 9400320.

The previous prime is 28368643. The next prime is 28368701. The reversal of 28368684 is 48686382.

It is a happy 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, 20164 + ... + 21524.

It is an arithmetic number, because the mean of its divisors is an integer number (1541330).

Almost surely, 2^28368684 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 28368684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36991920).

28368684 is an abundant number, since it is smaller than the sum of its proper divisors (45615156).

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

28368684 is a wasteful number, since it uses less digits than its factorization.

28368684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567 (or 1559 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 28368684 is about 5326.2260560363. The cubic root of 28368684 is about 304.9858776942.

The spelling of 28368684 in words is "twenty-eight million, three hundred sixty-eight thousand, six hundred eighty-four".