199232688 has 20 divisors (see below), whose sum is σ = 514684568. Its totient is φ = 66410880.

The previous prime is 199232681. The next prime is 199232713. The reversal of 199232688 is 886232991.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 4150681 = 199232688 / (1 + 9 + 9 + 2 + 3 + 2 + 6 + 8 + 8).

It is not an unprimeable number, because it can be changed into a prime (199232681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2075293 + ... + 2075388.

Almost surely, 2^199232688 is an apocalyptic number.

It is an amenable number.

199232688 is an abundant number, since it is smaller than the sum of its proper divisors (315451880).

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

199232688 is a wasteful number, since it uses less digits than its factorization.

199232688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150692 (or 4150686 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 199232688 is about 14114.9809776705. The cubic root of 199232688 is about 584.0547112063.

The spelling of 199232688 in words is "one hundred ninety-nine million, two hundred thirty-two thousand, six hundred eighty-eight".