198408 has 32 divisors (see below), whose sum is σ = 567360. Its totient is φ = 56640.

The previous prime is 198397. The next prime is 198409. The reversal of 198408 is 804891.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (198409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423 + ... + 758.

It is an arithmetic number, because the mean of its divisors is an integer number (17730).

2¹⁹⁸⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

198408 is an abundant number, since it is smaller than the sum of its proper divisors (368952).

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

198408 is a wasteful number, since it uses less digits than its factorization.

198408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1193 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 198408 is about 445.4301292010. The cubic root of 198408 is about 58.3247733471.

It can be divided in two parts, 198 and 408, that added together give a palindrome (606).

The spelling of 198408 in words is "one hundred ninety-eight thousand, four hundred eight".