28804836 has 24 divisors (see below), whose sum is σ = 70749280. Its totient is φ = 9096192.

The previous prime is 28804813. The next prime is 28804873. The reversal of 28804836 is 63840882.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28804794 and 28804803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62941 + ... + 63396.

Almost surely, 2^28804836 is an apocalyptic number.

It is an amenable number.

28804836 is an abundant number, since it is smaller than the sum of its proper divisors (41944444).

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

28804836 is a wasteful number, since it uses less digits than its factorization.

28804836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126363 (or 126361 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 28804836 is about 5367.0136947841. The cubic root of 28804836 is about 306.5409288139.

The spelling of 28804836 in words is "twenty-eight million, eight hundred four thousand, eight hundred thirty-six".