285814 has 4 divisors (see below), whose sum is σ = 428724. Its totient is φ = 142906.

The previous prime is 285781. The next prime is 285823. The reversal of 285814 is 418582.

It is a semiprime because it is the product of two primes.

It is a d-powerful number, because it can be written as 2¹⁸ + 8² + 8⁴ + 5⁵ + 1 + 4⁷ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71452 + ... + 71455.

It is an arithmetic number, because the mean of its divisors is an integer number (107181).

2²⁸⁵⁸¹⁴ is an apocalyptic number.

285814 is a deficient number, since it is larger than the sum of its proper divisors (142910).

285814 is a wasteful number, since it uses less digits than its factorization.

285814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142909.

The product of its digits is 2560, while the sum is 28.

The square root of 285814 is about 534.6157498615. The cubic root of 285814 is about 65.8710368157.

The spelling of 285814 in words is "two hundred eighty-five thousand, eight hundred fourteen".