28090266 has 16 divisors (see below), whose sum is σ = 57487584. Its totient is φ = 9145584.

The previous prime is 28090253. The next prime is 28090277. The reversal of 28090266 is 66209082.

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, 54181 + ... + 54696.

It is an arithmetic number, because the mean of its divisors is an integer number (3592974).

Almost surely, 2^28090266 is an apocalyptic number.

28090266 is an abundant number, since it is smaller than the sum of its proper divisors (29397318).

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

28090266 is a wasteful number, since it uses less digits than its factorization.

28090266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108925.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 28090266 is about 5300.0250942802. The cubic root of 28090266 is about 303.9848575675.

The spelling of 28090266 in words is "twenty-eight million, ninety thousand, two hundred sixty-six".