285386 has 8 divisors (see below), whose sum is σ = 441984. Its totient is φ = 138060.

The previous prime is 285377. The next prime is 285421. The reversal of 285386 is 683582.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2240 + ... + 2363.

It is an arithmetic number, because the mean of its divisors is an integer number (55248).

2²⁸⁵³⁸⁶ is an apocalyptic number.

285386 is a deficient number, since it is larger than the sum of its proper divisors (156598).

285386 is a wasteful number, since it uses less digits than its factorization.

285386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4636.

The product of its digits is 11520, while the sum is 32.

The square root of 285386 is about 534.2153123975. The cubic root of 285386 is about 65.8381402604.

The spelling of 285386 in words is "two hundred eighty-five thousand, three hundred eighty-six".