198797592 has 128 divisors (see below), whose sum is σ = 614615040. Its totient is φ = 52285440.

The previous prime is 198797591. The next prime is 198797611. The reversal of 198797592 is 295797891.

198797592 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 not an unprimeable number, because it can be changed into a prime (198797591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133492 + ... + 134972.

It is an arithmetic number, because the mean of its divisors is an integer number (4801680).

Almost surely, 2^198797592 is an apocalyptic number.

198797592 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 198797592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307307520).

198797592 is an abundant number, since it is smaller than the sum of its proper divisors (415817448).

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

198797592 is a wasteful number, since it uses less digits than its factorization.

198797592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561 (or 1557 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 57.

The square root of 198797592 is about 14099.5599931345. The cubic root of 198797592 is about 583.6292370481.

The spelling of 198797592 in words is "one hundred ninety-eight million, seven hundred ninety-seven thousand, five hundred ninety-two".