198317268 has 24 divisors (see below), whose sum is σ = 514156160. Its totient is φ = 66105720.

The previous prime is 198317243. The next prime is 198317281. The reversal of 198317268 is 862713891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 918028 + ... + 918243.

Almost surely, 2^198317268 is an apocalyptic number.

198317268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

198317268 is an abundant number, since it is smaller than the sum of its proper divisors (315838892).

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

198317268 is a wasteful number, since it uses less digits than its factorization.

198317268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836284 (or 1836276 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 198317268 is about 14082.5163944517. The cubic root of 198317268 is about 583.1588134981.

The spelling of 198317268 in words is "one hundred ninety-eight million, three hundred seventeen thousand, two hundred sixty-eight".