28805184 has 84 divisors (see below), whose sum is σ = 84557616. Its totient is φ = 9370368.

The previous prime is 28805171. The next prime is 28805239. The reversal of 28805184 is 48150882.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

28805184 is a modest number, since divided by 5184 gives 2880 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24187 + ... + 25349.

Almost surely, 2^28805184 is an apocalyptic number.

28805184 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28805184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42278808).

28805184 is an abundant number, since it is smaller than the sum of its proper divisors (55752432).

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

28805184 is a wasteful number, since it uses less digits than its factorization.

28805184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224 (or 1211 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 28805184 is about 5367.0461149500. The cubic root of 28805184 is about 306.5421632804.

The spelling of 28805184 in words is "twenty-eight million, eight hundred five thousand, one hundred eighty-four".