198924128 has 96 divisors (see below), whose sum is σ = 440082720. Its totient is φ = 87920640.

The previous prime is 198924127. The next prime is 198924161. The reversal of 198924128 is 821429891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198924127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1824938 + ... + 1825046.

It is an arithmetic number, because the mean of its divisors is an integer number (4584195).

Almost surely, 2^198924128 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 198924128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220041360).

198924128 is an abundant number, since it is smaller than the sum of its proper divisors (241158592).

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

198924128 is a wasteful number, since it uses less digits than its factorization.

198924128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 272 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 198924128 is about 14104.0465115512. The cubic root of 198924128 is about 583.7530387589.

The spelling of 198924128 in words is "one hundred ninety-eight million, nine hundred twenty-four thousand, one hundred twenty-eight".