28041103 has 4 divisors (see below), whose sum is σ = 28121800. Its totient is φ = 27960408.

The previous prime is 28041077. The next prime is 28041113. The reversal of 28041103 is 30114082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28041103 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 (28041113) 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, 39825 + ... + 40522.

It is an arithmetic number, because the mean of its divisors is an integer number (7030450).

Almost surely, 2^28041103 is an apocalyptic number.

28041103 is a deficient number, since it is larger than the sum of its proper divisors (80697).

28041103 is an equidigital number, since it uses as much as digits as its factorization.

28041103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80696.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 28041103 is about 5295.3850662629. The cubic root of 28041103 is about 303.8074113455.

Adding to 28041103 its reverse (30114082), we get a palindrome (58155185).

The spelling of 28041103 in words is "twenty-eight million, forty-one thousand, one hundred three".