198888 has 16 divisors (see below), whose sum is σ = 497280. Its totient is φ = 66288.

The previous prime is 198859. The next prime is 198899. The reversal of 198888 is 888891.

It is a happy number.

It is an unprimeable number.

198888 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 4120 + ... + 4167.

It is an arithmetic number, because the mean of its divisors is an integer number (31080).

2¹⁹⁸⁸⁸⁸ is an apocalyptic number.

It is an amenable number.

198888 is an abundant number, since it is smaller than the sum of its proper divisors (298392).

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

198888 is a wasteful number, since it uses less digits than its factorization.

198888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8296 (or 8292 counting only the distinct ones).

The product of its digits is 36864, while the sum is 42.

The square root of 198888 is about 445.9686087608. The cubic root of 198888 is about 58.3717696797.

It can be divided in two parts, 1 and 98888, that added together give a palindrome (98889).

The spelling of 198888 in words is "one hundred ninety-eight thousand, eight hundred eighty-eight".