198445056 has 48 divisors (see below), whose sum is σ = 529074000. Its totient is φ = 66146304.

The previous prime is 198445031. The next prime is 198445067. The reversal of 198445056 is 650544891.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 198444999 and 198445017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10006 + ... + 22293.

It is an arithmetic number, because the mean of its divisors is an integer number (11022375).

Almost surely, 2^198445056 is an apocalyptic number.

198445056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

198445056 is an abundant number, since it is smaller than the sum of its proper divisors (330628944).

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

198445056 is an equidigital number, since it uses as much as digits as its factorization.

198445056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32324 (or 32304 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 198445056 is about 14087.0527790592. The cubic root of 198445056 is about 583.2840416218.

The spelling of 198445056 in words is "one hundred ninety-eight million, four hundred forty-five thousand, fifty-six".