198942856 has 64 divisors (see below), whose sum is σ = 435801600. Its totient is φ = 83386368.

The previous prime is 198942803. The next prime is 198942859. The reversal of 198942856 is 658249891.

It is not an unprimeable number, because it can be changed into a prime (198942859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 853716 + ... + 853948.

It is an arithmetic number, because the mean of its divisors is an integer number (6809400).

Almost surely, 2^198942856 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 198942856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217900800).

198942856 is an abundant number, since it is smaller than the sum of its proper divisors (236858744).

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

198942856 is a wasteful number, since it uses less digits than its factorization.

198942856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 514 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 52.

The square root of 198942856 is about 14104.7104188636. The cubic root of 198942856 is about 583.7713576090.

The spelling of 198942856 in words is "one hundred ninety-eight million, nine hundred forty-two thousand, eight hundred fifty-six".