198438402 has 16 divisors (see below), whose sum is σ = 397028160. Its totient is φ = 66120912.

The previous prime is 198438391. The next prime is 198438403. The reversal of 198438402 is 204834891.

It is not an unprimeable number, because it can be changed into a prime (198438403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17868 + ... + 26760.

It is an arithmetic number, because the mean of its divisors is an integer number (24814260).

Almost surely, 2^198438402 is an apocalyptic number.

198438402 is an abundant number, since it is smaller than the sum of its proper divisors (198589758).

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

198438402 is a wasteful number, since it uses less digits than its factorization.

198438402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12617.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 198438402 is about 14086.8166027673. The cubic root of 198438402 is about 583.2775222431.

The spelling of 198438402 in words is "one hundred ninety-eight million, four hundred thirty-eight thousand, four hundred two".