198731298 has 32 divisors (see below), whose sum is σ = 420618240. Its totient is φ = 62421840.

The previous prime is 198731263. The next prime is 198731311. The reversal of 198731298 is 892137891.

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 15 ways as a sum of consecutive naturals, for example, 17211 + ... + 26337.

It is an arithmetic number, because the mean of its divisors is an integer number (13144320).

Almost surely, 2^198731298 is an apocalyptic number.

198731298 is an abundant number, since it is smaller than the sum of its proper divisors (221886942).

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

198731298 is a wasteful number, since it uses less digits than its factorization.

198731298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9342.

The product of its digits is 217728, while the sum is 48.

The square root of 198731298 is about 14097.2088726811. The cubic root of 198731298 is about 583.5643546084.

The spelling of 198731298 in words is "one hundred ninety-eight million, seven hundred thirty-one thousand, two hundred ninety-eight".