198258 has 16 divisors (see below), whose sum is σ = 400896. Its totient is φ = 65360.

The previous prime is 198257. The next prime is 198259. The reversal of 198258 is 852891.

It is a happy number.

198258 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (198257) and next prime (198259).

It is not an unprimeable number, because it can be changed into a prime (198251) 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, 943 + ... + 1133.

It is an arithmetic number, because the mean of its divisors is an integer number (25056).

2¹⁹⁸²⁵⁸ is an apocalyptic number.

198258 is an abundant number, since it is smaller than the sum of its proper divisors (202638).

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

198258 is a wasteful number, since it uses less digits than its factorization.

198258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369.

The product of its digits is 5760, while the sum is 33.

The square root of 198258 is about 445.2617207890. The cubic root of 198258 is about 58.3100714506.

The spelling of 198258 in words is "one hundred ninety-eight thousand, two hundred fifty-eight".