28238750879 has 2 divisors, whose sum is σ = 28238750880. Its totient is φ = 28238750878.

The previous prime is 28238750851. The next prime is 28238750927. The reversal of 28238750879 is 97805783282.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28238750879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28238750479) 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, 14119375439 + 14119375440.

It is an arithmetic number, because the mean of its divisors is an integer number (14119375440).

Almost surely, 2^28238750879 is an apocalyptic number.

28238750879 is a deficient number, since it is larger than the sum of its proper divisors (1).

28238750879 is an equidigital number, since it uses as much as digits as its factorization.

28238750879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13547520, while the sum is 59.

The spelling of 28238750879 in words is "twenty-eight billion, two hundred thirty-eight million, seven hundred fifty thousand, eight hundred seventy-nine".