198489824 has 108 divisors (see below), whose sum is σ = 453043584. Its totient is φ = 85542912.

The previous prime is 198489821. The next prime is 198489853. The reversal of 198489824 is 428984891.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198489821) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1562849 + ... + 1562975.

It is an arithmetic number, because the mean of its divisors is an integer number (4194848).

Almost surely, 2^198489824 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 198489824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226521792).

198489824 is an abundant number, since it is smaller than the sum of its proper divisors (254553760).

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

198489824 is a wasteful number, since it uses less digits than its factorization.

198489824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 159 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 53.

The square root of 198489824 is about 14088.6416662502. The cubic root of 198489824 is about 583.3279001036.

The spelling of 198489824 in words is "one hundred ninety-eight million, four hundred eighty-nine thousand, eight hundred twenty-four".