199927928 has 32 divisors (see below), whose sum is σ = 389055360. Its totient is φ = 96215040.

The previous prime is 199927921. The next prime is 199927951. The reversal of 199927928 is 829729991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199927921) 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, 45776 + ... + 49952.

It is an arithmetic number, because the mean of its divisors is an integer number (12157980).

Almost surely, 2^199927928 is an apocalyptic number.

It is an amenable number.

199927928 is a deficient number, since it is larger than the sum of its proper divisors (189127432).

199927928 is a wasteful number, since it uses less digits than its factorization.

199927928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4407 (or 4403 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 56.

The square root of 199927928 is about 14139.5872641319. The cubic root of 199927928 is about 584.7332926007.

The spelling of 199927928 in words is "one hundred ninety-nine million, nine hundred twenty-seven thousand, nine hundred twenty-eight".