287492 has 12 divisors (see below), whose sum is σ = 515676. Its totient is φ = 140160.

The previous prime is 287491. The next prime is 287501. The reversal of 287492 is 294782.

It can be written as a sum of positive squares in 2 ways, for example, as 10816 + 276676 = 104^2 + 526^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 287492.

It is not an unprimeable number, because it can be changed into a prime (287491) 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, 713 + ... + 1040.

It is an arithmetic number, because the mean of its divisors is an integer number (42973).

2²⁸⁷⁴⁹² is an apocalyptic number.

It is an amenable number.

287492 is a deficient number, since it is larger than the sum of its proper divisors (228184).

287492 is a wasteful number, since it uses less digits than its factorization.

287492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798 (or 1796 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 287492 is about 536.1828046478. The cubic root of 287492 is about 65.9996939074. Note that the first 3 decimals are identical.

The spelling of 287492 in words is "two hundred eighty-seven thousand, four hundred ninety-two".