285423 has 8 divisors (see below), whose sum is σ = 385200. Its totient is φ = 187968.

The previous prime is 285421. The next prime is 285433. The reversal of 285423 is 324582.

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

It is not a de Polignac number, because 285423 - 2¹ = 285421 is a prime.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 285393 and 285402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285421) 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, 268 + ... + 801.

It is an arithmetic number, because the mean of its divisors is an integer number (48150).

2²⁸⁵⁴²³ is an apocalyptic number.

285423 is a deficient number, since it is larger than the sum of its proper divisors (99777).

285423 is a wasteful number, since it uses less digits than its factorization.

285423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161.

The product of its digits is 1920, while the sum is 24.

The square root of 285423 is about 534.2499415068. The cubic root of 285423 is about 65.8409854197.

The spelling of 285423 in words is "two hundred eighty-five thousand, four hundred twenty-three".