286228 has 12 divisors (see below), whose sum is σ = 505120. Its totient is φ = 141912.

The previous prime is 286199. The next prime is 286243. The reversal of 286228 is 822682.

It is a happy number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 286196 and 286205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433 + ... + 871.

2²⁸⁶²²⁸ is an apocalyptic number.

It is an amenable number.

286228 is a deficient number, since it is larger than the sum of its proper divisors (218892).

286228 is a wasteful number, since it uses less digits than its factorization.

286228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 604 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 286228 is about 535.0028037310. The cubic root of 286228 is about 65.9028260827.

The spelling of 286228 in words is "two hundred eighty-six thousand, two hundred twenty-eight".