198671968 has 24 divisors (see below), whose sum is σ = 426693960. Its totient is φ = 90305280.

The previous prime is 198671887. The next prime is 198671983. The reversal of 198671968 is 869176891.

It is a congruent number.

It is an unprimeable number.

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, 281853 + ... + 282556.

It is an arithmetic number, because the mean of its divisors is an integer number (17778915).

Almost surely, 2^198671968 is an apocalyptic number.

It is an amenable number.

198671968 is an abundant number, since it is smaller than the sum of its proper divisors (228021992).

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

198671968 is a wasteful number, since it uses less digits than its factorization.

198671968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564430 (or 564422 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 55.

The square root of 198671968 is about 14095.1043983363. The cubic root of 198671968 is about 583.5062756520.

The spelling of 198671968 in words is "one hundred ninety-eight million, six hundred seventy-one thousand, nine hundred sixty-eight".