28008198 has 12 divisors (see below), whose sum is σ = 60684468. Its totient is φ = 9336060.

The previous prime is 28008187. The next prime is 28008217. The reversal of 28008198 is 89180082.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 777988 + ... + 778023.

It is an arithmetic number, because the mean of its divisors is an integer number (5057039).

Almost surely, 2^28008198 is an apocalyptic number.

28008198 is an abundant number, since it is smaller than the sum of its proper divisors (32676270).

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

28008198 is a wasteful number, since it uses less digits than its factorization.

28008198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556019 (or 1556016 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 28008198 is about 5292.2772036242. The cubic root of 28008198 is about 303.6885299581.

The spelling of 28008198 in words is "twenty-eight million, eight thousand, one hundred ninety-eight".