28910 has 24 divisors (see below), whose sum is σ = 61560. Its totient is φ = 9744.

The previous prime is 28909. The next prime is 28921. The reversal of 28910 is 1982.

28910 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

28910 is strictly pandigital in base 6.

It is a nialpdrome in base 14 and base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 461 + ... + 519.

It is an arithmetic number, because the mean of its divisors is an integer number (2565).

2²⁸⁹¹⁰ is an apocalyptic number.

28910 is an abundant number, since it is smaller than the sum of its proper divisors (32650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30780).

28910 is a wasteful number, since it uses less digits than its factorization.

28910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 28910 is about 170.0294092209. The cubic root of 28910 is about 30.6913527337.

The spelling of 28910 in words is "twenty-eight thousand, nine hundred ten".