198444648 has 16 divisors (see below), whose sum is σ = 496111680. Its totient is φ = 66148208.

The previous prime is 198444647. The next prime is 198444691. The reversal of 198444648 is 846444891.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 198444597 and 198444606.

It is not an unprimeable number, because it can be changed into a prime (198444643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4134240 + ... + 4134287.

It is an arithmetic number, because the mean of its divisors is an integer number (31006980).

Almost surely, 2^198444648 is an apocalyptic number.

It is an amenable number.

198444648 is an abundant number, since it is smaller than the sum of its proper divisors (297667032).

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

198444648 is a wasteful number, since it uses less digits than its factorization.

198444648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8268536 (or 8268532 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The square root of 198444648 is about 14087.0382976692. The cubic root of 198444648 is about 583.2836418805.

The spelling of 198444648 in words is "one hundred ninety-eight million, four hundred forty-four thousand, six hundred forty-eight".