198217792 has 28 divisors (see below), whose sum is σ = 399794476. Its totient is φ = 97482240.

The previous prime is 198217777. The next prime is 198217837. The reversal of 198217792 is 297712891.

It can be written as a sum of positive squares in 2 ways, for example, as 66977856 + 131239936 = 8184^2 + 11456^2 .

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, 21483 + ... + 29290.

Almost surely, 2^198217792 is an apocalyptic number.

It is an amenable number.

198217792 is an abundant number, since it is smaller than the sum of its proper divisors (201576684).

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

198217792 is an equidigital number, since it uses as much as digits as its factorization.

198217792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50846 (or 50836 counting only the distinct ones).

The product of its digits is 127008, while the sum is 46.

The square root of 198217792 is about 14078.9840542562. The cubic root of 198217792 is about 583.0612929800.

The spelling of 198217792 in words is "one hundred ninety-eight million, two hundred seventeen thousand, seven hundred ninety-two".