28164198 has 8 divisors (see below), whose sum is σ = 56328408. Its totient is φ = 9388064.

The previous prime is 28164197. The next prime is 28164221. The reversal of 28164198 is 89146182.

It is a sphenic number, since it is the product of 3 distinct primes.

28164198 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28164197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2347011 + ... + 2347022.

It is an arithmetic number, because the mean of its divisors is an integer number (7041051).

Almost surely, 2^28164198 is an apocalyptic number.

28164198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28164198 is a wasteful number, since it uses less digits than its factorization.

28164198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694038.

The product of its digits is 27648, while the sum is 39.

The square root of 28164198 is about 5306.9951950233. The cubic root of 28164198 is about 304.2513142863.

The spelling of 28164198 in words is "twenty-eight million, one hundred sixty-four thousand, one hundred ninety-eight".