286988 has 12 divisors (see below), whose sum is σ = 540960. Its totient is φ = 132432.

The previous prime is 286987. The next prime is 286999. The reversal of 286988 is 889682.

It is a happy number.

286988 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×286988² = 164724224288, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 286988.

It is not an unprimeable number, because it can be changed into a prime (286981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2708 + ... + 2811.

It is an arithmetic number, because the mean of its divisors is an integer number (45080).

2²⁸⁶⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

286988 is a deficient number, since it is larger than the sum of its proper divisors (253972).

286988 is a wasteful number, since it uses less digits than its factorization.

286988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5536 (or 5534 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 286988 is about 535.7126095212. The cubic root of 286988 is about 65.9611034969.

The spelling of 286988 in words is "two hundred eighty-six thousand, nine hundred eighty-eight".