28826 has 16 divisors (see below), whose sum is σ = 51840. Its totient is φ = 11760.

The previous prime is 28817. The next prime is 28837. The reversal of 28826 is 62882.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 28795 and 28804.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 371 + ... + 441.

It is an arithmetic number, because the mean of its divisors is an integer number (3240).

2²⁸⁸²⁶ is an apocalyptic number.

28826 is a deficient number, since it is larger than the sum of its proper divisors (23014).

28826 is a wasteful number, since it uses less digits than its factorization.

28826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109.

The product of its digits is 1536, while the sum is 26.

The square root of 28826 is about 169.7822134383. The cubic root of 28826 is about 30.6615986164.

The spelling of 28826 in words is "twenty-eight thousand, eight hundred twenty-six".