285284988 has 36 divisors (see below), whose sum is σ = 726653928. Its totient is φ = 94367520.

The previous prime is 285284963. The next prime is 285285047. The reversal of 285284988 is 889482582.

It is a happy number.

285284988 is a `hidden beast` number, since 28 + 528 + 4 + 98 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25531 + ... + 34962.

Almost surely, 2^285284988 is an apocalyptic number.

It is an amenable number.

285284988 is an abundant number, since it is smaller than the sum of its proper divisors (441368940).

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

285284988 is a wasteful number, since it uses less digits than its factorization.

285284988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60634 (or 60629 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 54.

The square root of 285284988 is about 16890.3815232220. The cubic root of 285284988 is about 658.3037156930.

The spelling of 285284988 in words is "two hundred eighty-five million, two hundred eighty-four thousand, nine hundred eighty-eight".