285981368 has 16 divisors (see below), whose sum is σ = 538355160. Its totient is φ = 142420000.

The previous prime is 285981349. The next prime is 285981403. The reversal of 285981368 is 863189582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69203 + ... + 73218.

Almost surely, 2^285981368 is an apocalyptic number.

It is an amenable number.

285981368 is a deficient number, since it is larger than the sum of its proper divisors (252373792).

285981368 is a wasteful number, since it uses less digits than its factorization.

285981368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142678 (or 142674 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The square root of 285981368 is about 16910.9836496876. The cubic root of 285981368 is about 658.8389197373.

The spelling of 285981368 in words is "two hundred eighty-five million, nine hundred eighty-one thousand, three hundred sixty-eight".