28268944 has 20 divisors (see below), whose sum is σ = 59750640. Its totient is φ = 12849440.

The previous prime is 28268917. The next prime is 28268951. The reversal of 28268944 is 44986282.

It is a self number, because there is not a number n which added to its sum of digits gives 28268944.

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, 80134 + ... + 80485.

It is an arithmetic number, because the mean of its divisors is an integer number (2987532).

Almost surely, 2^28268944 is an apocalyptic number.

It is an amenable number.

28268944 is an abundant number, since it is smaller than the sum of its proper divisors (31481696).

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

28268944 is a wasteful number, since it uses less digits than its factorization.

28268944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160638 (or 160632 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 28268944 is about 5316.8547093183. The cubic root of 28268944 is about 304.6280299220.

The spelling of 28268944 in words is "twenty-eight million, two hundred sixty-eight thousand, nine hundred forty-four".