28134 has 16 divisors (see below), whose sum is σ = 62640. Its totient is φ = 9360.

The previous prime is 28123. The next prime is 28151. The reversal of 28134 is 43182.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

28134 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207 + ... + 314.

It is an arithmetic number, because the mean of its divisors is an integer number (3915).

2²⁸¹³⁴ is an apocalyptic number.

28134 is an abundant number, since it is smaller than the sum of its proper divisors (34506).

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 (31320).

28134 is a wasteful number, since it uses less digits than its factorization.

28134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 526 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 28134 is about 167.7319289819. The cubic root of 28134 is about 30.4142534730.

The spelling of 28134 in words is "twenty-eight thousand, one hundred thirty-four".