287916 has 12 divisors (see below), whose sum is σ = 671832. Its totient is φ = 95968.

The previous prime is 287887. The next prime is 287921. The reversal of 287916 is 619782.

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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11985 + ... + 12008.

It is an arithmetic number, because the mean of its divisors is an integer number (55986).

2²⁸⁷⁹¹⁶ is an apocalyptic number.

It is an amenable number.

287916 is an abundant number, since it is smaller than the sum of its proper divisors (383916).

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

287916 is a wasteful number, since it uses less digits than its factorization.

287916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24000 (or 23998 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 287916 is about 536.5780465133. The cubic root of 287916 is about 66.0321239395.

It can be divided in two parts, 2879 and 16, that multiplied together give a palindrome (46064).

The spelling of 287916 in words is "two hundred eighty-seven thousand, nine hundred sixteen".