28880887879 has 2 divisors, whose sum is σ = 28880887880. Its totient is φ = 28880887878.

The previous prime is 28880887829. The next prime is 28880887897. The reversal of 28880887879 is 97878808882.

Together with next prime (28880887897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28880887879 - 2⁷ = 28880887751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28880887829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14440443939 + 14440443940.

It is an arithmetic number, because the mean of its divisors is an integer number (14440443940).

Almost surely, 2^28880887879 is an apocalyptic number.

28880887879 is a deficient number, since it is larger than the sum of its proper divisors (1).

28880887879 is an equidigital number, since it uses as much as digits as its factorization.

28880887879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 231211008, while the sum is 73.

The spelling of 28880887879 in words is "twenty-eight billion, eight hundred eighty million, eight hundred eighty-seven thousand, eight hundred seventy-nine".