198355228 has 24 divisors (see below), whose sum is σ = 357682752. Its totient is φ = 96198144.

The previous prime is 198355217. The next prime is 198355247. The reversal of 198355228 is 822553891.

198355228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16576 + ... + 25912.

It is an arithmetic number, because the mean of its divisors is an integer number (14903448).

Almost surely, 2^198355228 is an apocalyptic number.

It is an amenable number.

198355228 is a deficient number, since it is larger than the sum of its proper divisors (159327524).

198355228 is a wasteful number, since it uses less digits than its factorization.

198355228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9501 (or 9499 counting only the distinct ones).

The product of its digits is 172800, while the sum is 43.

The square root of 198355228 is about 14083.8641004520. The cubic root of 198355228 is about 583.1960186905.

The spelling of 198355228 in words is "one hundred ninety-eight million, three hundred fifty-five thousand, two hundred twenty-eight".