198780328 has 16 divisors (see below), whose sum is σ = 372905280. Its totient is φ = 99338928.

The previous prime is 198780319. The next prime is 198780349. The reversal of 198780328 is 823087891.

198780328 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 3 ways as a sum of consecutive naturals, for example, 13851 + ... + 24277.

It is an arithmetic number, because the mean of its divisors is an integer number (23306580).

Almost surely, 2^198780328 is an apocalyptic number.

It is an amenable number.

198780328 is a deficient number, since it is larger than the sum of its proper divisors (174124952).

198780328 is a wasteful number, since it uses less digits than its factorization.

198780328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12816 (or 12812 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 198780328 is about 14098.9477621559. The cubic root of 198780328 is about 583.6123420298.

The spelling of 198780328 in words is "one hundred ninety-eight million, seven hundred eighty thousand, three hundred twenty-eight".