28205194 has 16 divisors (see below), whose sum is σ = 42863040. Its totient is φ = 13919040.

The previous prime is 28205189. The next prime is 28205231. The reversal of 28205194 is 49150282.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78387 + ... + 78745.

It is an arithmetic number, because the mean of its divisors is an integer number (2678940).

Almost surely, 2^28205194 is an apocalyptic number.

28205194 is a deficient number, since it is larger than the sum of its proper divisors (14657846).

28205194 is a wasteful number, since it uses less digits than its factorization.

28205194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 28205194 is about 5310.8562398167. The cubic root of 28205194 is about 304.3988661510.

The spelling of 28205194 in words is "twenty-eight million, two hundred five thousand, one hundred ninety-four".