198445256 has 8 divisors (see below), whose sum is σ = 372084870. Its totient is φ = 99222624.

The previous prime is 198445249. The next prime is 198445271. The reversal of 198445256 is 652544891.

It can be written as a sum of positive squares in only one way, i.e., 197852356 + 592900 = 14066^2 + 770^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12402821 + ... + 12402836.

Almost surely, 2^198445256 is an apocalyptic number.

It is an amenable number.

198445256 is a deficient number, since it is larger than the sum of its proper divisors (173639614).

198445256 is a wasteful number, since it uses less digits than its factorization.

198445256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24805663 (or 24805659 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 198445256 is about 14087.0598777744. The cubic root of 198445256 is about 583.2842375732.

The spelling of 198445256 in words is "one hundred ninety-eight million, four hundred forty-five thousand, two hundred fifty-six".