287478 has 12 divisors (see below), whose sum is σ = 622908. Its totient is φ = 95820.

The previous prime is 287449. The next prime is 287491. The reversal of 287478 is 874782.

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 287478.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7968 + ... + 8003.

It is an arithmetic number, because the mean of its divisors is an integer number (51909).

2²⁸⁷⁴⁷⁸ is an apocalyptic number.

287478 is an abundant number, since it is smaller than the sum of its proper divisors (335430).

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

287478 is a wasteful number, since it uses less digits than its factorization.

287478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15979 (or 15976 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 287478 is about 536.1697492399. The cubic root of 287478 is about 65.9986225608.

The spelling of 287478 in words is "two hundred eighty-seven thousand, four hundred seventy-eight".