28956784 has 10 divisors (see below), whose sum is σ = 56103800. Its totient is φ = 14478384.

The previous prime is 28956757. The next prime is 28956827. The reversal of 28956784 is 48765982.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 904884 + ... + 904915.

It is an arithmetic number, because the mean of its divisors is an integer number (5610380).

Almost surely, 2^28956784 is an apocalyptic number.

It is an amenable number.

28956784 is a deficient number, since it is larger than the sum of its proper divisors (27147016).

28956784 is a wasteful number, since it uses less digits than its factorization.

28956784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809807 (or 1809801 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The square root of 28956784 is about 5381.1508062867. The cubic root of 28956784 is about 307.0789937734.

The spelling of 28956784 in words is "twenty-eight million, nine hundred fifty-six thousand, seven hundred eighty-four".