28082573 has 2 divisors, whose sum is σ = 28082574. Its totient is φ = 28082572.

The previous prime is 28082557. The next prime is 28082591. The reversal of 28082573 is 37528082.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26183689 + 1898884 = 5117^2 + 1378^2 .

It is a cyclic number.

It is not a de Polignac number, because 28082573 - 2⁴ = 28082557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28082503) 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, 14041286 + 14041287.

It is an arithmetic number, because the mean of its divisors is an integer number (14041287).

Almost surely, 2^28082573 is an apocalyptic number.

It is an amenable number.

28082573 is a deficient number, since it is larger than the sum of its proper divisors (1).

28082573 is an equidigital number, since it uses as much as digits as its factorization.

28082573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 28082573 is about 5299.2992933028. The cubic root of 28082573 is about 303.9571045489.

The spelling of 28082573 in words is "twenty-eight million, eighty-two thousand, five hundred seventy-three".