287484 has 12 divisors (see below), whose sum is σ = 670824. Its totient is φ = 95824.

The previous prime is 287449. The next prime is 287491. The reversal of 287484 is 484782.

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

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

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 287484.

It is an unprimeable number.

287484 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11967 + ... + 11990.

It is an arithmetic number, because the mean of its divisors is an integer number (55902).

2²⁸⁷⁴⁸⁴ is an apocalyptic number.

It is an amenable number.

287484 is an abundant number, since it is smaller than the sum of its proper divisors (383340).

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

287484 is a wasteful number, since it uses less digits than its factorization.

287484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23964 (or 23962 counting only the distinct ones).

The product of its digits is 14336, while the sum is 33.

The square root of 287484 is about 536.1753444537. The cubic root of 287484 is about 65.9990817136. Note that the first 3 decimals are identical.

The spelling of 287484 in words is "two hundred eighty-seven thousand, four hundred eighty-four".