28198194 has 16 divisors (see below), whose sum is σ = 56609280. Its totient is φ = 9363920.

The previous prime is 28198187. The next prime is 28198199. The reversal of 28198194 is 49189182.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28198199) 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, 7122 + ... + 10349.

It is an arithmetic number, because the mean of its divisors is an integer number (3538080).

Almost surely, 2^28198194 is an apocalyptic number.

28198194 is an abundant number, since it is smaller than the sum of its proper divisors (28411086).

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

28198194 is a wasteful number, since it uses less digits than its factorization.

28198194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17745.

The product of its digits is 41472, while the sum is 42.

The square root of 28198194 is about 5310.1971714805. The cubic root of 28198194 is about 304.3736820382.

The spelling of 28198194 in words is "twenty-eight million, one hundred ninety-eight thousand, one hundred ninety-four".