198028 has 12 divisors (see below), whose sum is σ = 357952. Its totient is φ = 95760.

The previous prime is 198017. The next prime is 198031. The reversal of 198028 is 820891.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 197987 and 198005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675 + ... + 922.

2¹⁹⁸⁰²⁸ is an apocalyptic number.

It is an amenable number.

198028 is a deficient number, since it is larger than the sum of its proper divisors (159924).

198028 is a wasteful number, since it uses less digits than its factorization.

198028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632 (or 1630 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 198028 is about 445.0033707738. The cubic root of 198028 is about 58.2875141331.

The spelling of 198028 in words is "one hundred ninety-eight thousand, twenty-eight".