198271892 has 48 divisors (see below), whose sum is σ = 430510080. Its totient is φ = 77801472.

The previous prime is 198271873. The next prime is 198271903. The reversal of 198271892 is 298172891.

198271892 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44084 + ... + 48372.

It is an arithmetic number, because the mean of its divisors is an integer number (8968960).

Almost surely, 2^198271892 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 198271892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215255040).

198271892 is an abundant number, since it is smaller than the sum of its proper divisors (232238188).

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

198271892 is a wasteful number, since it uses less digits than its factorization.

198271892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440 (or 4438 counting only the distinct ones).

The product of its digits is 145152, while the sum is 47.

The square root of 198271892 is about 14080.9052265826. The cubic root of 198271892 is about 583.1143335376.

Subtracting 198271892 from its reverse (298172891), we obtain a palindrome (99900999).

The spelling of 198271892 in words is "one hundred ninety-eight million, two hundred seventy-one thousand, eight hundred ninety-two".