198435888 has 90 divisors (see below), whose sum is σ = 646036404. Its totient is φ = 56693952.

The previous prime is 198435871. The next prime is 198435889. The reversal of 198435888 is 888534891.

198435888 is a `hidden beast` number, since 19 + 8 + 43 + 588 + 8 = 666.

198435888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (198435889) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7006 + ... + 21117.

Almost surely, 2^198435888 is an apocalyptic number.

198435888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

198435888 is an abundant number, since it is smaller than the sum of its proper divisors (447600516).

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

198435888 is a wasteful number, since it uses less digits than its factorization.

198435888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28151 (or 28135 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The square root of 198435888 is about 14086.7273701169. The cubic root of 198435888 is about 583.2750590676.

The spelling of 198435888 in words is "one hundred ninety-eight million, four hundred thirty-five thousand, eight hundred eighty-eight".