287222 has 8 divisors (see below), whose sum is σ = 464016. Its totient is φ = 132552.

The previous prime is 287219. The next prime is 287233. The reversal of 287222 is 222782.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 5498 + ... + 5549.

It is an arithmetic number, because the mean of its divisors is an integer number (58002).

2²⁸⁷²²² is an apocalyptic number.

287222 is a deficient number, since it is larger than the sum of its proper divisors (176794).

287222 is a wasteful number, since it uses less digits than its factorization.

287222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11062.

The product of its digits is 896, while the sum is 23.

The square root of 287222 is about 535.9309657036. The cubic root of 287222 is about 65.9790260872.

The spelling of 287222 in words is "two hundred eighty-seven thousand, two hundred twenty-two".