285287068 has 24 divisors (see below), whose sum is σ = 546522480. Its totient is φ = 129227520.

The previous prime is 285287053. The next prime is 285287077. The reversal of 285287068 is 860782582.

It is a happy number.

It is a super-2 number, since 2×285287068² = 162777422336073248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1828 + ... + 23956.

It is an arithmetic number, because the mean of its divisors is an integer number (22771770).

Almost surely, 2^285287068 is an apocalyptic number.

It is an amenable number.

285287068 is a deficient number, since it is larger than the sum of its proper divisors (261235412).

285287068 is a wasteful number, since it uses less digits than its factorization.

285287068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22437 (or 22435 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 285287068 is about 16890.4430966153. The cubic root of 285287068 is about 658.3053155767.

The spelling of 285287068 in words is "two hundred eighty-five million, two hundred eighty-seven thousand, sixty-eight".