198422928 has 180 divisors, whose sum is σ = 641195568. Its totient is φ = 56799360.

The previous prime is 198422927. The next prime is 198422951. The reversal of 198422928 is 829224891.

It is a happy number.

198422928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (198422927) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 571651 + ... + 571997.

Almost surely, 2^198422928 is an apocalyptic number.

198422928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198422928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320597784).

198422928 is an abundant number, since it is smaller than the sum of its proper divisors (442772640).

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

198422928 is a wasteful number, since it uses less digits than its factorization.

198422928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 382 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 198422928 is about 14086.2673551229. The cubic root of 198422928 is about 583.2623607440.

The spelling of 198422928 in words is "one hundred ninety-eight million, four hundred twenty-two thousand, nine hundred twenty-eight".