285135 has 8 divisors (see below), whose sum is σ = 456240. Its totient is φ = 152064.

The previous prime is 285121. The next prime is 285139. The reversal of 285135 is 531582.

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

It is not a de Polignac number, because 285135 - 2⁴ = 285119 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9490 + ... + 9519.

It is an arithmetic number, because the mean of its divisors is an integer number (57030).

2²⁸⁵¹³⁵ is an apocalyptic number.

285135 is a deficient number, since it is larger than the sum of its proper divisors (171105).

285135 is a wasteful number, since it uses less digits than its factorization.

285135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19017.

The product of its digits is 1200, while the sum is 24.

The square root of 285135 is about 533.9803367166. The cubic root of 285135 is about 65.8188328191.

The spelling of 285135 in words is "two hundred eighty-five thousand, one hundred thirty-five".