198816268 has 48 divisors (see below), whose sum is σ = 414296064. Its totient is φ = 81688320.

The previous prime is 198816239. The next prime is 198816329. The reversal of 198816268 is 862618891.

198816268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97071 + ... + 99097.

It is an arithmetic number, because the mean of its divisors is an integer number (8631168).

Almost surely, 2^198816268 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 198816268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207148032).

198816268 is an abundant number, since it is smaller than the sum of its proper divisors (215479796).

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

198816268 is a wasteful number, since it uses less digits than its factorization.

198816268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182 (or 2180 counting only the distinct ones).

The product of its digits is 331776, while the sum is 49.

The square root of 198816268 is about 14100.2222677517. Note that the first 4 decimals coincide. The cubic root of 198816268 is about 583.6475127864.

The spelling of 198816268 in words is "one hundred ninety-eight million, eight hundred sixteen thousand, two hundred sixty-eight".