198928986 has 8 divisors (see below), whose sum is σ = 397857984. Its totient is φ = 66309660.

The previous prime is 198928979. The next prime is 198928987. The reversal of 198928986 is 689829891.

It is a sphenic number, since it is the product of 3 distinct primes.

198928986 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (198928987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16577410 + ... + 16577421.

It is an arithmetic number, because the mean of its divisors is an integer number (49732248).

Almost surely, 2^198928986 is an apocalyptic number.

198928986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

198928986 is a wasteful number, since it uses less digits than its factorization.

198928986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33154836.

The product of its digits is 4478976, while the sum is 60.

The square root of 198928986 is about 14104.2187305785. The cubic root of 198928986 is about 583.7577907368.

The spelling of 198928986 in words is "one hundred ninety-eight million, nine hundred twenty-eight thousand, nine hundred eighty-six".