28230 has 16 divisors (see below), whose sum is σ = 67824. Its totient is φ = 7520.

The previous prime is 28229. The next prime is 28277. The reversal of 28230 is 3282.

28230 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441 + ... + 500.

It is an arithmetic number, because the mean of its divisors is an integer number (4239).

2²⁸²³⁰ is an apocalyptic number.

28230 is an abundant number, since it is smaller than the sum of its proper divisors (39594).

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 (33912).

28230 is a wasteful number, since it uses less digits than its factorization.

28230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 28230 is about 168.0178561939. The cubic root of 28230 is about 30.4488077920.

The spelling of 28230 in words is "twenty-eight thousand, two hundred thirty".