198427992 has 128 divisors (see below), whose sum is σ = 599270400. Its totient is φ = 53526528.

The previous prime is 198427973. The next prime is 198428057. The reversal of 198427992 is 299724891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 343608 + ... + 344184.

It is an arithmetic number, because the mean of its divisors is an integer number (4681800).

Almost surely, 2^198427992 is an apocalyptic number.

198427992 is a gapful number since it is divisible by the number (12) 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 198427992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299635200).

198427992 is an abundant number, since it is smaller than the sum of its proper divisors (400842408).

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

198427992 is a wasteful number, since it uses less digits than its factorization.

198427992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 701 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The square root of 198427992 is about 14086.4471035105. The cubic root of 198427992 is about 583.2673225622.

The spelling of 198427992 in words is "one hundred ninety-eight million, four hundred twenty-seven thousand, nine hundred ninety-two".