28782832 has 40 divisors (see below), whose sum is σ = 60933600. Its totient is φ = 13090560.

The previous prime is 28782829. The next prime is 28782839. The reversal of 28782832 is 23828782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28782839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13794 + ... + 15742.

It is an arithmetic number, because the mean of its divisors is an integer number (1523340).

Almost surely, 2^28782832 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 28782832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30466800).

28782832 is an abundant number, since it is smaller than the sum of its proper divisors (32150768).

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

28782832 is a wasteful number, since it uses less digits than its factorization.

28782832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041 (or 2035 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 28782832 is about 5364.9633735935. The cubic root of 28782832 is about 306.4628534419.

The spelling of 28782832 in words is "twenty-eight million, seven hundred eighty-two thousand, eight hundred thirty-two".