288791 has 4 divisors (see below), whose sum is σ = 289872. Its totient is φ = 287712.

The previous prime is 288773. The next prime is 288803. The reversal of 288791 is 197882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 288791 - 2¹⁴ = 272407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288731) 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, 191 + ... + 783.

It is an arithmetic number, because the mean of its divisors is an integer number (72468).

2²⁸⁸⁷⁹¹ is an apocalyptic number.

288791 is a deficient number, since it is larger than the sum of its proper divisors (1081).

288791 is an equidigital number, since it uses as much as digits as its factorization.

288791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080.

The product of its digits is 8064, while the sum is 35.

The square root of 288791 is about 537.3927800036. The cubic root of 288791 is about 66.0989486109.

Subtracting from 288791 its reverse (197882), we obtain a palindrome (90909).

The spelling of 288791 in words is "two hundred eighty-eight thousand, seven hundred ninety-one".