28559023 has 2 divisors, whose sum is σ = 28559024. Its totient is φ = 28559022.

The previous prime is 28559017. The next prime is 28559039. The reversal of 28559023 is 32095582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28559023 - 2⁵ = 28558991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28559023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28559423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14279511 + 14279512.

It is an arithmetic number, because the mean of its divisors is an integer number (14279512).

Almost surely, 2^28559023 is an apocalyptic number.

28559023 is a deficient number, since it is larger than the sum of its proper divisors (1).

28559023 is an equidigital number, since it uses as much as digits as its factorization.

28559023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 28559023 is about 5344.0642773080. The cubic root of 28559023 is about 305.6664563071. Note that the first 3 decimals are identical.

The spelling of 28559023 in words is "twenty-eight million, five hundred fifty-nine thousand, twenty-three".