28717103 has 2 divisors, whose sum is σ = 28717104. Its totient is φ = 28717102.

The previous prime is 28717081. The next prime is 28717109. The reversal of 28717103 is 30171782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28717103 - 2¹² = 28713007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28717109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14358551 + 14358552.

It is an arithmetic number, because the mean of its divisors is an integer number (14358552).

Almost surely, 2^28717103 is an apocalyptic number.

28717103 is a deficient number, since it is larger than the sum of its proper divisors (1).

28717103 is an equidigital number, since it uses as much as digits as its factorization.

28717103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 28717103 is about 5358.8341082739. The cubic root of 28717103 is about 306.2293942543.

Adding to 28717103 its reverse (30171782), we get a palindrome (58888885).

The spelling of 28717103 in words is "twenty-eight million, seven hundred seventeen thousand, one hundred three".