198842432 has 84 divisors (see below), whose sum is σ = 422219628. Its totient is φ = 92851200.

The previous prime is 198842431. The next prime is 198842443. The reversal of 198842432 is 234248891.

It can be written as a sum of positive squares in 2 ways, for example, as 62980096 + 135862336 = 7936^2 + 11656^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 198842432.

It is not an unprimeable number, because it can be changed into a prime (198842431) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3259682 + ... + 3259742.

Almost surely, 2^198842432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198842432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211109814).

198842432 is an abundant number, since it is smaller than the sum of its proper divisors (223377196).

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

198842432 is an equidigital number, since it uses as much as digits as its factorization.

198842432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 147 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 198842432 is about 14101.1500240229. The cubic root of 198842432 is about 583.6731141182.

The spelling of 198842432 in words is "one hundred ninety-eight million, eight hundred forty-two thousand, four hundred thirty-two".