287922 has 16 divisors (see below), whose sum is σ = 588672. Its totient is φ = 93840.

The previous prime is 287921. The next prime is 287933. The reversal of 287922 is 229782.

It is a self number, because there is not a number n which added to its sum of digits gives 287922.

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 287922.

It is not an unprimeable number, because it can be changed into a prime (287921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229 + ... + 792.

It is an arithmetic number, because the mean of its divisors is an integer number (36792).

2²⁸⁷⁹²² is an apocalyptic number.

287922 is an abundant number, since it is smaller than the sum of its proper divisors (300750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

287922 is a wasteful number, since it uses less digits than its factorization.

287922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073.

The product of its digits is 4032, while the sum is 30.

The square root of 287922 is about 536.5836374695. The cubic root of 287922 is about 66.0325826265.

The spelling of 287922 in words is "two hundred eighty-seven thousand, nine hundred twenty-two".