28093903 has 2 divisors, whose sum is σ = 28093904. Its totient is φ = 28093902.

The previous prime is 28093823. The next prime is 28093927. The reversal of 28093903 is 30939082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28093903 - 2⁹ = 28093391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28093963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14046951 + 14046952.

It is an arithmetic number, because the mean of its divisors is an integer number (14046952).

Almost surely, 2^28093903 is an apocalyptic number.

28093903 is a deficient number, since it is larger than the sum of its proper divisors (1).

28093903 is an equidigital number, since it uses as much as digits as its factorization.

28093903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 28093903 is about 5300.3681947578. The cubic root of 28093903 is about 303.9979765274.

The spelling of 28093903 in words is "twenty-eight million, ninety-three thousand, nine hundred three".