285357 has 8 divisors (see below), whose sum is σ = 385984. Its totient is φ = 187488.

The previous prime is 285343. The next prime is 285377. The reversal of 285357 is 753582.

It is a happy number.

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

It is not a de Polignac number, because 285357 - 2⁸ = 285101 is a prime.

It is a Duffinian number.

285357 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285357.

It is not an unprimeable number, because it can be changed into a prime (285317) 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, 433 + ... + 870.

It is an arithmetic number, because the mean of its divisors is an integer number (48248).

2²⁸⁵³⁵⁷ is an apocalyptic number.

It is an amenable number.

285357 is a deficient number, since it is larger than the sum of its proper divisors (100627).

285357 is a wasteful number, since it uses less digits than its factorization.

285357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its digits is 8400, while the sum is 30.

The square root of 285357 is about 534.1881690940. The cubic root of 285357 is about 65.8359100987.

The spelling of 285357 in words is "two hundred eighty-five thousand, three hundred fifty-seven".