28447266 has 16 divisors (see below), whose sum is σ = 56952000. Its totient is φ = 9472848.

The previous prime is 28447259. The next prime is 28447283. The reversal of 28447266 is 66274482.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6700 + ... + 10088.

It is an arithmetic number, because the mean of its divisors is an integer number (3559500).

Almost surely, 2^28447266 is an apocalyptic number.

28447266 is an abundant number, since it is smaller than the sum of its proper divisors (28504734).

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

28447266 is a wasteful number, since it uses less digits than its factorization.

28447266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4793.

The product of its digits is 129024, while the sum is 39.

The square root of 28447266 is about 5333.5978476072. The cubic root of 28447266 is about 305.2672243727.

The spelling of 28447266 in words is "twenty-eight million, four hundred forty-seven thousand, two hundred sixty-six".