28107 has 10 divisors (see below), whose sum is σ = 42108. Its totient is φ = 18684.

The previous prime is 28099. The next prime is 28109. The reversal of 28107 is 70182.

It is not a de Polignac number, because 28107 - 2³ = 28099 is a prime.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 28107.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28107.

It is not an unprimeable number, because it can be changed into a prime (28109) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 93 + ... + 254.

2²⁸¹⁰⁷ is an apocalyptic number.

28107 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28107 is a deficient number, since it is larger than the sum of its proper divisors (14001).

28107 is an equidigital number, since it uses as much as digits as its factorization.

28107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 28107 is about 167.6514240918. The cubic root of 28107 is about 30.4045209112.

Adding to 28107 its reverse (70182), we get a palindrome (98289).

The spelling of 28107 in words is "twenty-eight thousand, one hundred seven".