28587563 has 2 divisors, whose sum is σ = 28587564. Its totient is φ = 28587562.

The previous prime is 28587527. The next prime is 28587577. The reversal of 28587563 is 36578582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28587563 - 2⁶ = 28587499 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28587583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14293781 + 14293782.

It is an arithmetic number, because the mean of its divisors is an integer number (14293782).

Almost surely, 2^28587563 is an apocalyptic number.

28587563 is a deficient number, since it is larger than the sum of its proper divisors (1).

28587563 is an equidigital number, since it uses as much as digits as its factorization.

28587563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 44.

The square root of 28587563 is about 5346.7338628363. The cubic root of 28587563 is about 305.7682433595.

The spelling of 28587563 in words is "twenty-eight million, five hundred eighty-seven thousand, five hundred sixty-three".