198939234 has 64 divisors (see below), whose sum is σ = 453720960. Its totient is φ = 57646080.

The previous prime is 198939233. The next prime is 198939241. The reversal of 198939234 is 432939891.

It is not an unprimeable number, because it can be changed into a prime (198939233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356884 + ... + 357440.

It is an arithmetic number, because the mean of its divisors is an integer number (7089390).

Almost surely, 2^198939234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198939234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226860480).

198939234 is an abundant number, since it is smaller than the sum of its proper divisors (254781726).

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

198939234 is a wasteful number, since it uses less digits than its factorization.

198939234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835.

The product of its digits is 419904, while the sum is 48.

The square root of 198939234 is about 14104.5820214567. The cubic root of 198939234 is about 583.7678148283.

The spelling of 198939234 in words is "one hundred ninety-eight million, nine hundred thirty-nine thousand, two hundred thirty-four".