28206 has 12 divisors (see below), whose sum is σ = 61152. Its totient is φ = 9396.

The previous prime is 28201. The next prime is 28211. The reversal of 28206 is 60282.

It is an interprime number because it is at equal distance from previous prime (28201) and next prime (28211).

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1567 = 28206 / (2 + 8 + 2 + 0 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28201) by changing a digit.

28206 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 5 ways as a sum of consecutive naturals, for example, 766 + ... + 801.

It is an arithmetic number, because the mean of its divisors is an integer number (5096).

2²⁸²⁰⁶ is an apocalyptic number.

28206 is an abundant number, since it is smaller than the sum of its proper divisors (32946).

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

28206 is a wasteful number, since it uses less digits than its factorization.

28206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575 (or 1572 counting only the distinct ones).

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

The square root of 28206 is about 167.9464200273. The cubic root of 28206 is about 30.4401765654.

Adding to 28206 its sum of digits (18), we get a square (28224 = 168²).

Adding to 28206 its reverse (60282), we get a palindrome (88488).

The spelling of 28206 in words is "twenty-eight thousand, two hundred six".