198880027528 has 48 divisors (see below), whose sum is σ = 467149527180. Its totient is φ = 78677811072.

The previous prime is 198880027439. The next prime is 198880027573. The reversal of 198880027528 is 825720088891.

It can be written as a sum of positive squares in 2 ways, for example, as 178913772324 + 19966255204 = 422982^2 + 141302^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19508251 + ... + 19518442.

Almost surely, 2^198880027528 is an apocalyptic number.

It is an amenable number.

198880027528 is an abundant number, since it is smaller than the sum of its proper divisors (268269499652).

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

198880027528 is a wasteful number, since it uses less digits than its factorization.

198880027528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39026726 (or 39026715 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 58.

The spelling of 198880027528 in words is "one hundred ninety-eight billion, eight hundred eighty million, twenty-seven thousand, five hundred twenty-eight".