28075039 has 2 divisors, whose sum is σ = 28075040. Its totient is φ = 28075038.

The previous prime is 28075013. The next prime is 28075043. The reversal of 28075039 is 93057082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28075039 - 2¹¹ = 28072991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28074995 and 28075013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28075009) 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, 14037519 + 14037520.

It is an arithmetic number, because the mean of its divisors is an integer number (14037520).

Almost surely, 2^28075039 is an apocalyptic number.

28075039 is a deficient number, since it is larger than the sum of its proper divisors (1).

28075039 is an equidigital number, since it uses as much as digits as its factorization.

28075039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 28075039 is about 5298.5883969223. The cubic root of 28075039 is about 303.9299202207.

The spelling of 28075039 in words is "twenty-eight million, seventy-five thousand, thirty-nine".