285163800 has 48 divisors (see below), whose sum is σ = 884009640. Its totient is φ = 76043520.

The previous prime is 285163793. The next prime is 285163811. The reversal of 285163800 is 8361582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237037 + ... + 238236.

Almost surely, 2^285163800 is an apocalyptic number.

285163800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285163800 is an abundant number, since it is smaller than the sum of its proper divisors (598845840).

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

285163800 is a wasteful number, since it uses less digits than its factorization.

285163800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475292 (or 475283 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 285163800 is about 16886.7936565826. The cubic root of 285163800 is about 658.2104875021.

The spelling of 285163800 in words is "two hundred eighty-five million, one hundred sixty-three thousand, eight hundred".