285198 has 8 divisors (see below), whose sum is σ = 570408. Its totient is φ = 95064.

The previous prime is 285191. The next prime is 285199. The reversal of 285198 is 891582.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

285198 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23761 + ... + 23772.

It is an arithmetic number, because the mean of its divisors is an integer number (71301).

2²⁸⁵¹⁹⁸ is an apocalyptic number.

285198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

285198 is a wasteful number, since it uses less digits than its factorization.

285198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47538.

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

The square root of 285198 is about 534.0393243947. The cubic root of 285198 is about 65.8236799747.

The spelling of 285198 in words is "two hundred eighty-five thousand, one hundred ninety-eight".