285436 has 6 divisors (see below), whose sum is σ = 499520. Its totient is φ = 142716.

The previous prime is 285433. The next prime is 285451. The reversal of 285436 is 634582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285433) 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 as a sum of consecutive naturals, namely, 35676 + ... + 35683.

2²⁸⁵⁴³⁶ is an apocalyptic number.

It is an amenable number.

285436 is a deficient number, since it is larger than the sum of its proper divisors (214084).

285436 is a wasteful number, since it uses less digits than its factorization.

285436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71363 (or 71361 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 285436 is about 534.2621079583. The cubic root of 285436 is about 65.8419850119.

The spelling of 285436 in words is "two hundred eighty-five thousand, four hundred thirty-six".