28558441 has 2 divisors, whose sum is σ = 28558442. Its totient is φ = 28558440.

The previous prime is 28558399. The next prime is 28558477. The reversal of 28558441 is 14485582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27258841 + 1299600 = 5221^2 + 1140^2 .

It is a cyclic number.

It is not a de Polignac number, because 28558441 - 2⁹ = 28557929 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28558441.

It is not a weakly prime, because it can be changed into another prime (28558241) 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, 14279220 + 14279221.

It is an arithmetic number, because the mean of its divisors is an integer number (14279221).

Almost surely, 2^28558441 is an apocalyptic number.

It is an amenable number.

28558441 is a deficient number, since it is larger than the sum of its proper divisors (1).

28558441 is an equidigital number, since it uses as much as digits as its factorization.

28558441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51200, while the sum is 37.

The square root of 28558441 is about 5344.0098240928. The cubic root of 28558441 is about 305.6643799162.

The spelling of 28558441 in words is "twenty-eight million, five hundred fifty-eight thousand, four hundred forty-one".