28520593 has 2 divisors, whose sum is σ = 28520594. Its totient is φ = 28520592.

The previous prime is 28520581. The next prime is 28520617. The reversal of 28520593 is 39502582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20358144 + 8162449 = 4512^2 + 2857^2 .

It is a cyclic number.

It is not a de Polignac number, because 28520593 - 2⁵ = 28520561 is a prime.

It is not a weakly prime, because it can be changed into another prime (28520293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14260296 + 14260297.

It is an arithmetic number, because the mean of its divisors is an integer number (14260297).

Almost surely, 2^28520593 is an apocalyptic number.

It is an amenable number.

28520593 is a deficient number, since it is larger than the sum of its proper divisors (1).

28520593 is an equidigital number, since it uses as much as digits as its factorization.

28520593 is an odious number, because the sum of its binary digits is odd.

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

The square root of 28520593 is about 5340.4674889002. The cubic root of 28520593 is about 305.5292896773.

The spelling of 28520593 in words is "twenty-eight million, five hundred twenty thousand, five hundred ninety-three".