198872688 has 160 divisors (see below), whose sum is σ = 617992192. Its totient is φ = 53913600.

The previous prime is 198872629. The next prime is 198872699. The reversal of 198872688 is 886278891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 635220 + ... + 635532.

Almost surely, 2^198872688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198872688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308996096).

198872688 is an abundant number, since it is smaller than the sum of its proper divisors (419119504).

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

198872688 is a wasteful number, since it uses less digits than its factorization.

198872688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 417 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 57.

The square root of 198872688 is about 14102.2228035158. Note that the first 3 decimals coincide. The cubic root of 198872688 is about 583.7027166497.

The spelling of 198872688 in words is "one hundred ninety-eight million, eight hundred seventy-two thousand, six hundred eighty-eight".