28110105 has 16 divisors (see below), whose sum is σ = 49973760. Its totient is φ = 14991984.

The previous prime is 28110097. The next prime is 28110113. The reversal of 28110105 is 50101182.

It is an interprime number because it is at equal distance from previous prime (28110097) and next prime (28110113).

It is not a de Polignac number, because 28110105 - 2³ = 28110097 is a prime.

It is a super-2 number, since 2×28110105² = 1580356006222050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103977 + ... + 104246.

It is an arithmetic number, because the mean of its divisors is an integer number (3123360).

Almost surely, 2^28110105 is an apocalyptic number.

It is an amenable number.

28110105 is a deficient number, since it is larger than the sum of its proper divisors (21863655).

28110105 is a wasteful number, since it uses less digits than its factorization.

28110105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208237 (or 208231 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 28110105 is about 5301.8963588512. The cubic root of 28110105 is about 304.0564047290.

Adding to 28110105 its reverse (50101182), we get a palindrome (78211287).

The spelling of 28110105 in words is "twenty-eight million, one hundred ten thousand, one hundred five".