28876 has 6 divisors (see below), whose sum is σ = 50540. Its totient is φ = 14436.

The previous prime is 28871. The next prime is 28879. The reversal of 28876 is 67882.

It is a nialpdrome in base 15.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (28871) 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, 3606 + ... + 3613.

2²⁸⁸⁷⁶ is an apocalyptic number.

It is an amenable number.

28876 is a deficient number, since it is larger than the sum of its proper divisors (21664).

28876 is a wasteful number, since it uses less digits than its factorization.

28876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7223 (or 7221 counting only the distinct ones).

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

The square root of 28876 is about 169.9293971036. The cubic root of 28876 is about 30.6793163525.

The spelling of 28876 in words is "twenty-eight thousand, eight hundred seventy-six".