198423688 has 32 divisors (see below), whose sum is σ = 392803200. Its totient is φ = 93707712.

The previous prime is 198423683. The next prime is 198423721. The reversal of 198423688 is 886324891.

198423688 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 (198423683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54006 + ... + 57562.

It is an arithmetic number, because the mean of its divisors is an integer number (12275100).

Almost surely, 2^198423688 is an apocalyptic number.

It is an amenable number.

198423688 is a deficient number, since it is larger than the sum of its proper divisors (194379512).

198423688 is a wasteful number, since it uses less digits than its factorization.

198423688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949 (or 3945 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

The square root of 198423688 is about 14086.2943317254. The cubic root of 198423688 is about 583.2631054140.

The spelling of 198423688 in words is "one hundred ninety-eight million, four hundred twenty-three thousand, six hundred eighty-eight".