28716593 has 2 divisors, whose sum is σ = 28716594. Its totient is φ = 28716592.

The previous prime is 28716533. The next prime is 28716601. The reversal of 28716593 is 39561782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23203489 + 5513104 = 4817^2 + 2348^2 .

It is a cyclic number.

It is not a de Polignac number, because 28716593 - 2¹⁴ = 28700209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28716593.

It is not a weakly prime, because it can be changed into another prime (28716533) 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, 14358296 + 14358297.

It is an arithmetic number, because the mean of its divisors is an integer number (14358297).

Almost surely, 2^28716593 is an apocalyptic number.

It is an amenable number.

28716593 is a deficient number, since it is larger than the sum of its proper divisors (1).

28716593 is an equidigital number, since it uses as much as digits as its factorization.

28716593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 28716593 is about 5358.7865230852. The cubic root of 28716593 is about 306.2275814215.

The spelling of 28716593 in words is "twenty-eight million, seven hundred sixteen thousand, five hundred ninety-three".