286928 has 20 divisors (see below), whose sum is σ = 565440. Its totient is φ = 141024.

The previous prime is 286927. The next prime is 286973. The reversal of 286928 is 829682.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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 286928.

It is not an unprimeable number, because it can be changed into a prime (286927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1151 + ... + 1377.

It is an arithmetic number, because the mean of its divisors is an integer number (28272).

2²⁸⁶⁹²⁸ is an apocalyptic number.

It is an amenable number.

286928 is a deficient number, since it is larger than the sum of its proper divisors (278512).

286928 is a wasteful number, since it uses less digits than its factorization.

286928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 308 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 286928 is about 535.6566064187. The cubic root of 286928 is about 65.9565063917.

The spelling of 286928 in words is "two hundred eighty-six thousand, nine hundred twenty-eight".