285434853 has 32 divisors (see below), whose sum is σ = 456053760. Its totient is φ = 156752640.

The previous prime is 285434843. The next prime is 285434869. The reversal of 285434853 is 358434582.

It is not a de Polignac number, because 285434853 - 2⁹ = 285434341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285434833) 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 31 ways as a sum of consecutive naturals, for example, 4525 + ... + 24317.

It is an arithmetic number, because the mean of its divisors is an integer number (14251680).

Almost surely, 2^285434853 is an apocalyptic number.

285434853 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

285434853 is a deficient number, since it is larger than the sum of its proper divisors (170618907).

285434853 is a wasteful number, since it uses less digits than its factorization.

285434853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19849.

The product of its digits is 460800, while the sum is 42.

The square root of 285434853 is about 16894.8173414216. The cubic root of 285434853 is about 658.4189681834.

The spelling of 285434853 in words is "two hundred eighty-five million, four hundred thirty-four thousand, eight hundred fifty-three".