198673728 has 112 divisors (see below), whose sum is σ = 603747840. Its totient is φ = 57024000.

The previous prime is 198673723. The next prime is 198673753. The reversal of 198673728 is 827376891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198673723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37653 + ... + 42603.

Almost surely, 2^198673728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198673728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301873920).

198673728 is an abundant number, since it is smaller than the sum of its proper divisors (405074112).

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

198673728 is a wasteful number, since it uses less digits than its factorization.

198673728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4996 (or 4986 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The square root of 198673728 is about 14095.1668312227. The cubic root of 198673728 is about 583.5079987067.

The spelling of 198673728 in words is "one hundred ninety-eight million, six hundred seventy-three thousand, seven hundred twenty-eight".