285963117 has 24 divisors (see below), whose sum is σ = 434843808. Its totient is φ = 165765600.

The previous prime is 285963109. The next prime is 285963149. The reversal of 285963117 is 711369582.

It is not a de Polignac number, because 285963117 - 2³ = 285963109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285963107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9267 + ... + 25647.

It is an arithmetic number, because the mean of its divisors is an integer number (18118492).

Almost surely, 2^285963117 is an apocalyptic number.

It is an amenable number.

285963117 is a deficient number, since it is larger than the sum of its proper divisors (148880691).

285963117 is a wasteful number, since it uses less digits than its factorization.

285963117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16441 (or 16418 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 285963117 is about 16910.4440213733. Note that the first 3 decimals coincide. The cubic root of 285963117 is about 658.8249039933.

It can be divided in two parts, 28596 and 3117, that added together give a palindrome (31713).

The spelling of 285963117 in words is "two hundred eighty-five million, nine hundred sixty-three thousand, one hundred seventeen".