285140204 has 12 divisors (see below), whose sum is σ = 512481984. Its totient is φ = 138716784.

The previous prime is 285140179. The next prime is 285140213. The reversal of 285140204 is 402041582.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963164 + ... + 963459.

It is an arithmetic number, because the mean of its divisors is an integer number (42706832).

Almost surely, 2^285140204 is an apocalyptic number.

It is an amenable number.

285140204 is a deficient number, since it is larger than the sum of its proper divisors (227341780).

285140204 is a wasteful number, since it uses less digits than its factorization.

285140204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926664 (or 1926662 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 285140204 is about 16886.0949896653. The cubic root of 285140204 is about 658.1923323657.

Adding to 285140204 its reverse (402041582), we get a palindrome (687181786).

The spelling of 285140204 in words is "two hundred eighty-five million, one hundred forty thousand, two hundred four".