285218366 has 4 divisors (see below), whose sum is σ = 427827552. Its totient is φ = 142609182.

The previous prime is 285218357. The next prime is 285218413. The reversal of 285218366 is 663812582.

285218366 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71304590 + ... + 71304593.

It is an arithmetic number, because the mean of its divisors is an integer number (106956888).

Almost surely, 2^285218366 is an apocalyptic number.

285218366 is a deficient number, since it is larger than the sum of its proper divisors (142609186).

285218366 is a wasteful number, since it uses less digits than its factorization.

285218366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142609185.

The product of its digits is 138240, while the sum is 41.

The square root of 285218366 is about 16888.4092205276. The cubic root of 285218366 is about 658.2524676119.

The spelling of 285218366 in words is "two hundred eighty-five million, two hundred eighteen thousand, three hundred sixty-six".