286222 has 4 divisors (see below), whose sum is σ = 429336. Its totient is φ = 143110.

The previous prime is 286199. The next prime is 286243. The reversal of 286222 is 222682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222682 = 2 ⋅111341.

It is a junction number, because it is equal to n+sod(n) for n = 286193 and 286202.

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, 71554 + ... + 71557.

It is an arithmetic number, because the mean of its divisors is an integer number (107334).

2²⁸⁶²²² is an apocalyptic number.

286222 is a deficient number, since it is larger than the sum of its proper divisors (143114).

286222 is a wasteful number, since it uses less digits than its factorization.

286222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143113.

The product of its digits is 768, while the sum is 22.

The square root of 286222 is about 534.9971962543. The cubic root of 286222 is about 65.9023655877.

The spelling of 286222 in words is "two hundred eighty-six thousand, two hundred twenty-two".