285733 has 4 divisors (see below), whose sum is σ = 326560. Its totient is φ = 244908.

The previous prime is 285731. The next prime is 285749. The reversal of 285733 is 337582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 285733 - 2¹ = 285731 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20403 + ... + 20416.

It is an arithmetic number, because the mean of its divisors is an integer number (81640).

2²⁸⁵⁷³³ is an apocalyptic number.

It is an amenable number.

285733 is a deficient number, since it is larger than the sum of its proper divisors (40827).

285733 is an equidigital number, since it uses as much as digits as its factorization.

285733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40826.

The product of its digits is 5040, while the sum is 28.

The square root of 285733 is about 534.5399891495. The cubic root of 285733 is about 65.8648135865.

The spelling of 285733 in words is "two hundred eighty-five thousand, seven hundred thirty-three".