285000904 has 32 divisors (see below), whose sum is σ = 548586720. Its totient is φ = 138733056.

The previous prime is 285000901. The next prime is 285000907. The reversal of 285000904 is 409000582.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (285000901) and next prime (285000907).

It is not an unprimeable number, because it can be changed into a prime (285000901) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 120259 + ... + 122605.

It is an arithmetic number, because the mean of its divisors is an integer number (17143335).

Almost surely, 2^285000904 is an apocalyptic number.

It is an amenable number.

285000904 is a deficient number, since it is larger than the sum of its proper divisors (263585816).

285000904 is a wasteful number, since it uses less digits than its factorization.

285000904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749 (or 2745 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 285000904 is about 16881.9697902822. The cubic root of 285000904 is about 658.0851323226.

The spelling of 285000904 in words is "two hundred eighty-five million, nine hundred four", and thus it is an aban number.