198638796 has 24 divisors (see below), whose sum is σ = 467993344. Its totient is φ = 65569680.

The previous prime is 198638789. The next prime is 198638813. The reversal of 198638796 is 697836891.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79120 + ... + 81591.

Almost surely, 2^198638796 is an apocalyptic number.

It is an amenable number.

198638796 is an abundant number, since it is smaller than the sum of its proper divisors (269354548).

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

198638796 is a wasteful number, since it uses less digits than its factorization.

198638796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160821 (or 160819 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 57.

The square root of 198638796 is about 14093.9276285924. The cubic root of 198638796 is about 583.4737980831.

The spelling of 198638796 in words is "one hundred ninety-eight million, six hundred thirty-eight thousand, seven hundred ninety-six".