28048739 has 2 divisors, whose sum is σ = 28048740. Its totient is φ = 28048738.

The previous prime is 28048729. The next prime is 28048751. The reversal of 28048739 is 93784082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28048739 - 2⁸ = 28048483 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28048696 and 28048705.

It is not a weakly prime, because it can be changed into another prime (28048729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14024369 + 14024370.

It is an arithmetic number, because the mean of its divisors is an integer number (14024370).

Almost surely, 2^28048739 is an apocalyptic number.

28048739 is a deficient number, since it is larger than the sum of its proper divisors (1).

28048739 is an equidigital number, since it uses as much as digits as its factorization.

28048739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 28048739 is about 5296.1060223526. The cubic root of 28048739 is about 303.8349859009.

The spelling of 28048739 in words is "twenty-eight million, forty-eight thousand, seven hundred thirty-nine".