285434 has 8 divisors (see below), whose sum is σ = 438240. Its totient is φ = 139356.

The previous prime is 285433. The next prime is 285451. The reversal of 285434 is 434582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2¹⁸ + 8² + 4⁴ + 5² + 3⁸ + 4⁷ .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285434.

It is not an unprimeable number, because it can be changed into a prime (285433) 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 3 ways as a sum of consecutive naturals, for example, 1574 + ... + 1745.

It is an arithmetic number, because the mean of its divisors is an integer number (54780).

2²⁸⁵⁴³⁴ is an apocalyptic number.

285434 is a deficient number, since it is larger than the sum of its proper divisors (152806).

285434 is a wasteful number, since it uses less digits than its factorization.

285434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3364.

The product of its digits is 3840, while the sum is 26.

The square root of 285434 is about 534.2602362145. The cubic root of 285434 is about 65.8418312305.

The spelling of 285434 in words is "two hundred eighty-five thousand, four hundred thirty-four".