28324836 has 48 divisors (see below), whose sum is σ = 73931200. Its totient is φ = 9377856.

The previous prime is 28324789. The next prime is 28324847. The reversal of 28324836 is 63842382.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28324836.

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, 16800 + ... + 18408.

Almost surely, 2^28324836 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 28324836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36965600).

28324836 is an abundant number, since it is smaller than the sum of its proper divisors (45606364).

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

28324836 is a wasteful number, since it uses less digits than its factorization.

28324836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785 (or 1777 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 28324836 is about 5322.1082288882. The cubic root of 28324836 is about 304.8286630618.

It can be divided in two parts, 2832483 and 6, that added together give a square (2832489 = 1683²).

The spelling of 28324836 in words is "twenty-eight million, three hundred twenty-four thousand, eight hundred thirty-six".