28278330739 has 2 divisors, whose sum is σ = 28278330740. Its totient is φ = 28278330738.

The previous prime is 28278330713. The next prime is 28278330763. The reversal of 28278330739 is 93703387282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28278330739 - 2⁷ = 28278330611 is a prime.

It is a super-2 number, since 2×28278330739² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28278330709) 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, 14139165369 + 14139165370.

It is an arithmetic number, because the mean of its divisors is an integer number (14139165370).

Almost surely, 2^28278330739 is an apocalyptic number.

28278330739 is a deficient number, since it is larger than the sum of its proper divisors (1).

28278330739 is an equidigital number, since it uses as much as digits as its factorization.

28278330739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 28278330739 in words is "twenty-eight billion, two hundred seventy-eight million, three hundred thirty thousand, seven hundred thirty-nine".