28544266 has 16 divisors (see below), whose sum is σ = 43591680. Its totient is φ = 14016240.

The previous prime is 28544249. The next prime is 28544267. The reversal of 28544266 is 66244582.

It is not an unprimeable number, because it can be changed into a prime (28544267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27171 + ... + 28201.

It is an arithmetic number, because the mean of its divisors is an integer number (2724480).

Almost surely, 2^28544266 is an apocalyptic number.

28544266 is a deficient number, since it is larger than the sum of its proper divisors (15047414).

28544266 is a wasteful number, since it uses less digits than its factorization.

28544266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269.

The product of its digits is 92160, while the sum is 37.

The square root of 28544266 is about 5342.6834081761. The cubic root of 28544266 is about 305.6137993116.

It can be divided in two parts, 285 and 44266, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 28544266 in words is "twenty-eight million, five hundred forty-four thousand, two hundred sixty-six".