285136984 has 24 divisors (see below), whose sum is σ = 587655180. Its totient is φ = 129607280.

The previous prime is 285136949. The next prime is 285136993. The reversal of 285136984 is 489631582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146314 + ... + 148249.

Almost surely, 2^285136984 is an apocalyptic number.

It is an amenable number.

285136984 is an abundant number, since it is smaller than the sum of its proper divisors (302518196).

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

285136984 is a wasteful number, since it uses less digits than its factorization.

285136984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294591 (or 294576 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 285136984 is about 16885.9996446761. Note that the first 3 decimals coincide. The cubic root of 285136984 is about 658.1898547690.

The spelling of 285136984 in words is "two hundred eighty-five million, one hundred thirty-six thousand, nine hundred eighty-four".