28102107 has 16 divisors (see below), whose sum is σ = 40981248. Its totient is φ = 16987680.

The previous prime is 28102103. The next prime is 28102147. The reversal of 28102107 is 70120182.

It is not a de Polignac number, because 28102107 - 2² = 28102103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28102103) 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, 15753 + ... + 17445.

It is an arithmetic number, because the mean of its divisors is an integer number (2561328).

Almost surely, 2^28102107 is an apocalyptic number.

28102107 is a deficient number, since it is larger than the sum of its proper divisors (12879141).

28102107 is a wasteful number, since it uses less digits than its factorization.

28102107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 28102107 is about 5301.1420467669. The cubic root of 28102107 is about 304.0275648770.

Adding to 28102107 its reverse (70120182), we get a palindrome (98222289).

The spelling of 28102107 in words is "twenty-eight million, one hundred two thousand, one hundred seven".