198118256 has 80 divisors (see below), whose sum is σ = 457679040. Its totient is φ = 81285120.

The previous prime is 198118237. The next prime is 198118259. The reversal of 198118256 is 652811891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198118259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 587720 + ... + 588056.

It is an arithmetic number, because the mean of its divisors is an integer number (5720988).

Almost surely, 2^198118256 is an apocalyptic number.

198118256 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 198118256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228839520).

198118256 is an abundant number, since it is smaller than the sum of its proper divisors (259560784).

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

198118256 is a wasteful number, since it uses less digits than its factorization.

198118256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 556 counting only the distinct ones).

The product of its digits is 34560, while the sum is 41.

The square root of 198118256 is about 14075.4486962228. The cubic root of 198118256 is about 582.9636809792.

The spelling of 198118256 in words is "one hundred ninety-eight million, one hundred eighteen thousand, two hundred fifty-six".