28746844 has 12 divisors (see below), whose sum is σ = 57493744. Its totient is φ = 12320064.

The previous prime is 28746811. The next prime is 28746869. The reversal of 28746844 is 44864782.

28746844 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 28746844.

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 in 3 ways as a sum of consecutive naturals, for example, 513309 + ... + 513364.

Almost surely, 2^28746844 is an apocalyptic number.

It is an amenable number.

28746844 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28746844 is a wasteful number, since it uses less digits than its factorization.

28746844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026684 (or 1026682 counting only the distinct ones).

The product of its digits is 344064, while the sum is 43.

The square root of 28746844 is about 5361.6083407873. The cubic root of 28746844 is about 306.3350737411.

The spelling of 28746844 in words is "twenty-eight million, seven hundred forty-six thousand, eight hundred forty-four".