28895128739 has 2 divisors, whose sum is σ = 28895128740. Its totient is φ = 28895128738.

The previous prime is 28895128727. The next prime is 28895128751. The reversal of 28895128739 is 93782159882.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (28895128727) and next prime (28895128751).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28895128739 is a prime.

It is not a weakly prime, because it can be changed into another prime (28895128789) 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, 14447564369 + 14447564370.

It is an arithmetic number, because the mean of its divisors is an integer number (14447564370).

Almost surely, 2^28895128739 is an apocalyptic number.

28895128739 is a deficient number, since it is larger than the sum of its proper divisors (1).

28895128739 is an equidigital number, since it uses as much as digits as its factorization.

28895128739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 62.

The spelling of 28895128739 in words is "twenty-eight billion, eight hundred ninety-five million, one hundred twenty-eight thousand, seven hundred thirty-nine".