285783223 has 4 divisors (see below), whose sum is σ = 311763528. Its totient is φ = 259802920.

The previous prime is 285783221. The next prime is 285783241. The reversal of 285783223 is 322387582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 285783223 - 2¹ = 285783221 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285783221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12990136 + ... + 12990157.

It is an arithmetic number, because the mean of its divisors is an integer number (77940882).

Almost surely, 2^285783223 is an apocalyptic number.

285783223 is a deficient number, since it is larger than the sum of its proper divisors (25980305).

285783223 is a wasteful number, since it uses less digits than its factorization.

285783223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25980304.

The product of its digits is 161280, while the sum is 40.

The square root of 285783223 is about 16905.1241639924. The cubic root of 285783223 is about 658.6867235759.

The spelling of 285783223 in words is "two hundred eighty-five million, seven hundred eighty-three thousand, two hundred twenty-three".