285373 has 4 divisors (see below), whose sum is σ = 311328. Its totient is φ = 259420.

The previous prime is 285343. The next prime is 285377. The reversal of 285373 is 373582.

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 a de Polignac number, because none of the positive numbers 2^k-285373 is a prime.

It is a Duffinian number.

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 (285377) 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 3 ways as a sum of consecutive naturals, for example, 12961 + ... + 12982.

It is an arithmetic number, because the mean of its divisors is an integer number (77832).

2²⁸⁵³⁷³ is an apocalyptic number.

It is an amenable number.

285373 is a deficient number, since it is larger than the sum of its proper divisors (25955).

285373 is a wasteful number, since it uses less digits than its factorization.

285373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25954.

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

The square root of 285373 is about 534.2031448803. The cubic root of 285373 is about 65.8371405514.

Subtracting 285373 from its reverse (373582), we obtain a square (88209 = 297²).

It can be divided in two parts, 2853 and 73, that added together give a triangular number (2926 = T₇₆).

The spelling of 285373 in words is "two hundred eighty-five thousand, three hundred seventy-three".