287004 has 12 divisors (see below), whose sum is σ = 669704. Its totient is φ = 95664.

The previous prime is 287003. The next prime is 287047. The reversal of 287004 is 400782.

It is a happy number.

287004 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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 287004.

It is not an unprimeable number, because it can be changed into a prime (287003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11947 + ... + 11970.

2²⁸⁷⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

287004 is an abundant number, since it is smaller than the sum of its proper divisors (382700).

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

287004 is a wasteful number, since it uses less digits than its factorization.

287004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23924 (or 23922 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 287004 is about 535.7275426931. The cubic root of 287004 is about 65.9623292834.

Adding to 287004 its reverse (400782), we get a palindrome (687786).

The spelling of 287004 in words is "two hundred eighty-seven thousand, four".