198434 has 8 divisors (see below), whose sum is σ = 304128. Its totient is φ = 97060.

The previous prime is 198427. The next prime is 198437. The reversal of 198434 is 434891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 198397 and 198406.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198434.

It is not an unprimeable number, because it can be changed into a prime (198437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962 + ... + 1149.

It is an arithmetic number, because the mean of its divisors is an integer number (38016).

2¹⁹⁸⁴³⁴ is an apocalyptic number.

198434 is a deficient number, since it is larger than the sum of its proper divisors (105694).

198434 is a wasteful number, since it uses less digits than its factorization.

198434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160.

The product of its digits is 3456, while the sum is 29.

The square root of 198434 is about 445.4593135181. The cubic root of 198434 is about 58.3273209223.

The spelling of 198434 in words is "one hundred ninety-eight thousand, four hundred thirty-four".