198788928 has 112 divisors (see below), whose sum is σ = 574706496. Its totient is φ = 60272640.

The previous prime is 198788923. The next prime is 198788969. The reversal of 198788928 is 829887891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198788923) 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, 181663 + ... + 182753.

It is an arithmetic number, because the mean of its divisors is an integer number (5131308).

Almost surely, 2^198788928 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 198788928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287353248).

198788928 is an abundant number, since it is smaller than the sum of its proper divisors (375917568).

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

198788928 is a wasteful number, since it uses less digits than its factorization.

198788928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192 (or 1182 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 60.

The square root of 198788928 is about 14099.2527461564. The cubic root of 198788928 is about 583.6207583451.

The spelling of 198788928 in words is "one hundred ninety-eight million, seven hundred eighty-eight thousand, nine hundred twenty-eight".