285528816 has 30 divisors (see below), whose sum is σ = 799084520. Its totient is φ = 95176224.

The previous prime is 285528811. The next prime is 285528829. The reversal of 285528816 is 618825582.

285528816 is a `hidden beast` number, since 2 + 8 + 552 + 88 + 16 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285528811) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 991276 + ... + 991563.

Almost surely, 2^285528816 is an apocalyptic number.

It is an amenable number.

285528816 is an abundant number, since it is smaller than the sum of its proper divisors (513555704).

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

285528816 is a wasteful number, since it uses less digits than its factorization.

285528816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982853 (or 1982844 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The square root of 285528816 is about 16897.5979358014. The cubic root of 285528816 is about 658.4912091091.

The spelling of 285528816 in words is "two hundred eighty-five million, five hundred twenty-eight thousand, eight hundred sixteen".