287898 has 16 divisors (see below), whose sum is σ = 620256. Its totient is φ = 88560.

The previous prime is 287887. The next prime is 287921. The reversal of 287898 is 898782.

It is a happy number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 287898.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1768 + ... + 1923.

It is an arithmetic number, because the mean of its divisors is an integer number (38766).

2²⁸⁷⁸⁹⁸ is an apocalyptic number.

287898 is an abundant number, since it is smaller than the sum of its proper divisors (332358).

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

287898 is a wasteful number, since it uses less digits than its factorization.

287898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3709.

The product of its digits is 64512, while the sum is 42.

The square root of 287898 is about 536.5612732950. The cubic root of 287898 is about 66.0307478402.

The spelling of 287898 in words is "two hundred eighty-seven thousand, eight hundred ninety-eight".