28110103 has 4 divisors (see below), whose sum is σ = 32125840. Its totient is φ = 24094368.

The previous prime is 28110097. The next prime is 28110113. The reversal of 28110103 is 30101182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28110103 - 2¹⁷ = 27979031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28110113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2007858 + ... + 2007871.

It is an arithmetic number, because the mean of its divisors is an integer number (8031460).

Almost surely, 2^28110103 is an apocalyptic number.

28110103 is a deficient number, since it is larger than the sum of its proper divisors (4015737).

28110103 is an equidigital number, since it uses as much as digits as its factorization.

28110103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4015736.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 28110103 is about 5301.8961702395. The cubic root of 28110103 is about 304.0563975179.

Adding to 28110103 its reverse (30101182), we get a palindrome (58211285).

The spelling of 28110103 in words is "twenty-eight million, one hundred ten thousand, one hundred three".