285830 has 16 divisors (see below), whose sum is σ = 521424. Its totient is φ = 112800.

The previous prime is 285827. The next prime is 285839. The reversal of 285830 is 38582.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁴ + 8⁴ + 8⁶ + 5⁵ + 3⁴ + 0 .

It is a self number, because there is not a number n which added to its sum of digits gives 285830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869 + ... + 1151.

It is an arithmetic number, because the mean of its divisors is an integer number (32589).

2²⁸⁵⁸³⁰ is an apocalyptic number.

285830 is a deficient number, since it is larger than the sum of its proper divisors (235594).

285830 is a wasteful number, since it uses less digits than its factorization.

285830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 285830 is about 534.6307136707. The cubic root of 285830 is about 65.8722659565.

The spelling of 285830 in words is "two hundred eighty-five thousand, eight hundred thirty".