28045841 has 2 divisors, whose sum is σ = 28045842. Its totient is φ = 28045840.

The previous prime is 28045819. The next prime is 28045861. The reversal of 28045841 is 14854082.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14326225 + 13719616 = 3785^2 + 3704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28045841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28045798 and 28045807.

It is not a weakly prime, because it can be changed into another prime (28045811) 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, 14022920 + 14022921.

It is an arithmetic number, because the mean of its divisors is an integer number (14022921).

Almost surely, 2^28045841 is an apocalyptic number.

It is an amenable number.

28045841 is a deficient number, since it is larger than the sum of its proper divisors (1).

28045841 is an equidigital number, since it uses as much as digits as its factorization.

28045841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 28045841 is about 5295.8324180435. The cubic root of 28045841 is about 303.8245214481.

The spelling of 28045841 in words is "twenty-eight million, forty-five thousand, eight hundred forty-one".