28268744 has 16 divisors (see below), whose sum is σ = 60576000. Its totient is φ = 12115152.

The previous prime is 28268743. The next prime is 28268749. The reversal of 28268744 is 44786282.

It is not an unprimeable number, because it can be changed into a prime (28268743) 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 3 ways as a sum of consecutive naturals, for example, 252344 + ... + 252455.

It is an arithmetic number, because the mean of its divisors is an integer number (3786000).

Almost surely, 2^28268744 is an apocalyptic number.

It is an amenable number.

28268744 is an abundant number, since it is smaller than the sum of its proper divisors (32307256).

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

28268744 is a wasteful number, since it uses less digits than its factorization.

28268744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504812 (or 504808 counting only the distinct ones).

The product of its digits is 172032, while the sum is 41.

The square root of 28268744 is about 5316.8359011728. The cubic root of 28268744 is about 304.6273115158.

The spelling of 28268744 in words is "twenty-eight million, two hundred sixty-eight thousand, seven hundred forty-four".