28245103 has 4 divisors (see below), whose sum is σ = 28275280. Its totient is φ = 28214928.

The previous prime is 28245079. The next prime is 28245157. The reversal of 28245103 is 30154282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30154282 = 2 ⋅15077141.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28245103 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 (28245163) 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, 13638 + ... + 15571.

It is an arithmetic number, because the mean of its divisors is an integer number (7068820).

Almost surely, 2^28245103 is an apocalyptic number.

28245103 is a deficient number, since it is larger than the sum of its proper divisors (30177).

28245103 is an equidigital number, since it uses as much as digits as its factorization.

28245103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30176.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28245103 is about 5314.6122153926. The cubic root of 28245103 is about 304.5423684331.

Adding to 28245103 its reverse (30154282), we get a palindrome (58399385).

The spelling of 28245103 in words is "twenty-eight million, two hundred forty-five thousand, one hundred three".