28861103 has 2 divisors, whose sum is σ = 28861104. Its totient is φ = 28861102.

The previous prime is 28861051. The next prime is 28861109. The reversal of 28861103 is 30116882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28861103 - 2¹⁶ = 28795567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28861109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14430551 + 14430552.

It is an arithmetic number, because the mean of its divisors is an integer number (14430552).

Almost surely, 2^28861103 is an apocalyptic number.

28861103 is a deficient number, since it is larger than the sum of its proper divisors (1).

28861103 is an equidigital number, since it uses as much as digits as its factorization.

28861103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 28861103 is about 5372.2530655210. The cubic root of 28861103 is about 306.7403967071.

Adding to 28861103 its reverse (30116882), we get a palindrome (58977985).

The spelling of 28861103 in words is "twenty-eight million, eight hundred sixty-one thousand, one hundred three".