28113523 has 2 divisors, whose sum is σ = 28113524. Its totient is φ = 28113522.

The previous prime is 28113457. The next prime is 28113539. The reversal of 28113523 is 32531182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28113523 - 2⁹ = 28113011 is a prime.

It is not a weakly prime, because it can be changed into another prime (28113923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14056761 + 14056762.

It is an arithmetic number, because the mean of its divisors is an integer number (14056762).

Almost surely, 2^28113523 is an apocalyptic number.

28113523 is a deficient number, since it is larger than the sum of its proper divisors (1).

28113523 is an equidigital number, since it uses as much as digits as its factorization.

28113523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 28113523 is about 5302.2186865500. The cubic root of 28113523 is about 304.0687279685.

The spelling of 28113523 in words is "twenty-eight million, one hundred thirteen thousand, five hundred twenty-three".