286328 has 16 divisors (see below), whose sum is σ = 613680. Its totient is φ = 122688.

The previous prime is 286301. The next prime is 286333. The reversal of 286328 is 823682.

It is a self number, because there is not a number n which added to its sum of digits gives 286328.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 286328.

It is an unprimeable number.

286328 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2501 + ... + 2612.

It is an arithmetic number, because the mean of its divisors is an integer number (38355).

2²⁸⁶³²⁸ is an apocalyptic number.

286328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

286328 is an abundant number, since it is smaller than the sum of its proper divisors (327352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

286328 is a wasteful number, since it uses less digits than its factorization.

286328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126 (or 5122 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 286328 is about 535.0962530237. The cubic root of 286328 is about 65.9105000527.

The spelling of 286328 in words is "two hundred eighty-six thousand, three hundred twenty-eight".