198398022 has 16 divisors (see below), whose sum is σ = 397009200. Its totient is φ = 66097152.

The previous prime is 198397987. The next prime is 198398029. The reversal of 198398022 is 220893891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198398029) by changing a digit.

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, 4854 + ... + 20502.

It is an arithmetic number, because the mean of its divisors is an integer number (24813075).

Almost surely, 2^198398022 is an apocalyptic number.

198398022 is an abundant number, since it is smaller than the sum of its proper divisors (198611178).

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

198398022 is a wasteful number, since it uses less digits than its factorization.

198398022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17767.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 198398022 is about 14085.3832748704. The cubic root of 198398022 is about 583.2379560707.

The spelling of 198398022 in words is "one hundred ninety-eight million, three hundred ninety-eight thousand, twenty-two".