28438103 has 2 divisors, whose sum is σ = 28438104. Its totient is φ = 28438102.

The previous prime is 28438063. The next prime is 28438153. The reversal of 28438103 is 30183482.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28438103 - 2²² = 24243799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28438153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14219051 + 14219052.

It is an arithmetic number, because the mean of its divisors is an integer number (14219052).

Almost surely, 2^28438103 is an apocalyptic number.

28438103 is a deficient number, since it is larger than the sum of its proper divisors (1).

28438103 is an equidigital number, since it uses as much as digits as its factorization.

28438103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 28438103 is about 5332.7387897777. The cubic root of 28438103 is about 305.2344448435.

The spelling of 28438103 in words is "twenty-eight million, four hundred thirty-eight thousand, one hundred three".