285498 has 32 divisors (see below), whose sum is σ = 673920. Its totient is φ = 89280.

The previous prime is 285497. The next prime is 285517. The reversal of 285498 is 894582.

It is not an unprimeable number, because it can be changed into a prime (285497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 763 + ... + 1073.

It is an arithmetic number, because the mean of its divisors is an integer number (21060).

2²⁸⁵⁴⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336960).

285498 is an abundant number, since it is smaller than the sum of its proper divisors (388422).

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

285498 is a wasteful number, since it uses less digits than its factorization.

285498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 333 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 285498 is about 534.3201287618. The cubic root of 285498 is about 65.8467518803.

The spelling of 285498 in words is "two hundred eighty-five thousand, four hundred ninety-eight".