198331136 has 54 divisors (see below), whose sum is σ = 406275660. Its totient is φ = 96628224.

The previous prime is 198331127. The next prime is 198331151. The reversal of 198331136 is 631133891.

It is a junction number, because it is equal to n+sod(n) for n = 198331096 and 198331105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 473135 + ... + 473553.

Almost surely, 2^198331136 is an apocalyptic number.

198331136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198331136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203137830).

198331136 is an abundant number, since it is smaller than the sum of its proper divisors (207944524).

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

198331136 is an frugal number, since it uses more digits than its factorization.

198331136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 464 counting only the distinct ones).

The product of its digits is 11664, while the sum is 35.

The square root of 198331136 is about 14083.0087694356. The cubic root of 198331136 is about 583.1724062932.

The spelling of 198331136 in words is "one hundred ninety-eight million, three hundred thirty-one thousand, one hundred thirty-six".