285123366 has 24 divisors (see below), whose sum is σ = 673928424. Its totient is φ = 86400960.

The previous prime is 285123347. The next prime is 285123373. The reversal of 285123366 is 663321582.

It is a happy number.

285123366 is a `hidden beast` number, since 285 + 12 + 3 + 366 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 285123366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 719811 + ... + 720206.

It is an arithmetic number, because the mean of its divisors is an integer number (28080351).

Almost surely, 2^285123366 is an apocalyptic number.

285123366 is an abundant number, since it is smaller than the sum of its proper divisors (388805058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285123366 is a wasteful number, since it uses less digits than its factorization.

285123366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440036 (or 1440033 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 285123366 is about 16885.5964064051. The cubic root of 285123366 is about 658.1793763293.

It can be divided in two parts, 28512 and 3366, that added together give a triangular number (31878 = T₂₅₂).

The spelling of 285123366 in words is "two hundred eighty-five million, one hundred twenty-three thousand, three hundred sixty-six".