287798 has 16 divisors (see below), whose sum is σ = 502944. Its totient is φ = 120960.

The previous prime is 287789. The next prime is 287801. The reversal of 287798 is 897782.

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 287798.

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, 686 + ... + 1022.

It is an arithmetic number, because the mean of its divisors is an integer number (31434).

2²⁸⁷⁷⁹⁸ is an apocalyptic number.

287798 is a deficient number, since it is larger than the sum of its proper divisors (215146).

287798 is a wasteful number, since it uses less digits than its factorization.

287798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407.

The product of its digits is 56448, while the sum is 41.

The square root of 287798 is about 536.4680791995. The cubic root of 287798 is about 66.0231017995.

The spelling of 287798 in words is "two hundred eighty-seven thousand, seven hundred ninety-eight".