28728583879 has 2 divisors, whose sum is σ = 28728583880. Its totient is φ = 28728583878.

The previous prime is 28728583783. The next prime is 28728583901. The reversal of 28728583879 is 97838582782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28728583879 - 2²¹ = 28726486727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28728883879) 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, 14364291939 + 14364291940.

It is an arithmetic number, because the mean of its divisors is an integer number (14364291940).

Almost surely, 2^28728583879 is an apocalyptic number.

28728583879 is a deficient number, since it is larger than the sum of its proper divisors (1).

28728583879 is an equidigital number, since it uses as much as digits as its factorization.

28728583879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108380160, while the sum is 67.

The spelling of 28728583879 in words is "twenty-eight billion, seven hundred twenty-eight million, five hundred eighty-three thousand, eight hundred seventy-nine".