28867 has 2 divisors, whose sum is σ = 28868. Its totient is φ = 28866.

The previous prime is 28859. The next prime is 28871. The reversal of 28867 is 76882.

28867 is nontrivially palindromic in base 9.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28867 - 2³ = 28859 is a prime.

It is a Chen prime.

28867 is a lucky number.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (28807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14433 + 14434.

It is an arithmetic number, because the mean of its divisors is an integer number (14434).

2²⁸⁸⁶⁷ is an apocalyptic number.

28867 is a deficient number, since it is larger than the sum of its proper divisors (1).

28867 is an equidigital number, since it uses as much as digits as its factorization.

28867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 31.

The square root of 28867 is about 169.9029134535. The cubic root of 28867 is about 30.6761286703.

Adding to 28867 its product of digits (5376), we get a palindrome (34243).

It can be divided in two parts, 2886 and 7, that multiplied together give a palindrome (20202).

The spelling of 28867 in words is "twenty-eight thousand, eight hundred sixty-seven".