198234786 has 16 divisors (see below), whose sum is σ = 396612864. Its totient is φ = 66054384.

The previous prime is 198234781. The next prime is 198234797. The reversal of 198234786 is 687432891.

It is not an unprimeable number, because it can be changed into a prime (198234781) 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, 22351 + ... + 29933.

It is an arithmetic number, because the mean of its divisors is an integer number (24788304).

Almost surely, 2^198234786 is an apocalyptic number.

198234786 is an abundant number, since it is smaller than the sum of its proper divisors (198378078).

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

198234786 is a wasteful number, since it uses less digits than its factorization.

198234786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11945.

The product of its digits is 580608, while the sum is 48.

The square root of 198234786 is about 14079.5875649822. The cubic root of 198234786 is about 583.0779552254.

The spelling of 198234786 in words is "one hundred ninety-eight million, two hundred thirty-four thousand, seven hundred eighty-six".