287822 has 8 divisors (see below), whose sum is σ = 450576. Its totient is φ = 137632.

The previous prime is 287821. The next prime is 287849. The reversal of 287822 is 228782.

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

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 287822.

It is not an unprimeable number, because it can be changed into a prime (287821) 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, 3083 + ... + 3174.

It is an arithmetic number, because the mean of its divisors is an integer number (56322).

2²⁸⁷⁸²² is an apocalyptic number.

287822 is a deficient number, since it is larger than the sum of its proper divisors (162754).

287822 is a wasteful number, since it uses less digits than its factorization.

287822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6282.

The product of its digits is 3584, while the sum is 29.

The square root of 287822 is about 536.4904472588. The cubic root of 287822 is about 66.0249370108.

The spelling of 287822 in words is "two hundred eighty-seven thousand, eight hundred twenty-two".