28134844 has 12 divisors (see below), whose sum is σ = 49413168. Its totient is φ = 14016800.

The previous prime is 28134833. The next prime is 28134859. The reversal of 28134844 is 44843182.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11392 + ... + 13639.

It is an arithmetic number, because the mean of its divisors is an integer number (4117764).

Almost surely, 2^28134844 is an apocalyptic number.

It is an amenable number.

28134844 is a deficient number, since it is larger than the sum of its proper divisors (21278324).

28134844 is a wasteful number, since it uses less digits than its factorization.

28134844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25316 (or 25314 counting only the distinct ones).

The product of its digits is 24576, while the sum is 34.

The square root of 28134844 is about 5304.2288789229. The cubic root of 28134844 is about 304.1455760527.

The spelling of 28134844 in words is "twenty-eight million, one hundred thirty-four thousand, eight hundred forty-four".