28124107 has 16 divisors (see below), whose sum is σ = 32262912. Its totient is φ = 24282720.

The previous prime is 28124093. The next prime is 28124167. The reversal of 28124107 is 70142182.

It is a happy number.

It is not a de Polignac number, because 28124107 - 2¹⁵ = 28091339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28124167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16698 + ... + 18304.

It is an arithmetic number, because the mean of its divisors is an integer number (2016432).

Almost surely, 2^28124107 is an apocalyptic number.

28124107 is a deficient number, since it is larger than the sum of its proper divisors (4138805).

28124107 is a wasteful number, since it uses less digits than its factorization.

28124107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 28124107 is about 5303.2166653834. The cubic root of 28124107 is about 304.1068811334.

Adding to 28124107 its reverse (70142182), we get a palindrome (98266289).

The spelling of 28124107 in words is "twenty-eight million, one hundred twenty-four thousand, one hundred seven".