198422298 has 40 divisors (see below), whose sum is σ = 448807392. Its totient is φ = 65516904.

The previous prime is 198422269. The next prime is 198422299. The reversal of 198422298 is 892224891.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (198422299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11611 + ... + 23057.

Almost surely, 2^198422298 is an apocalyptic number.

198422298 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 198422298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224403696).

198422298 is an abundant number, since it is smaller than the sum of its proper divisors (250385094).

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

198422298 is a wasteful number, since it uses less digits than its factorization.

198422298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11568 (or 11559 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 198422298 is about 14086.2449929000. The cubic root of 198422298 is about 583.2617434503.

The spelling of 198422298 in words is "one hundred ninety-eight million, four hundred twenty-two thousand, two hundred ninety-eight".