28768732939 has 2 divisors, whose sum is σ = 28768732940. Its totient is φ = 28768732938.

The previous prime is 28768732907. The next prime is 28768732991. The reversal of 28768732939 is 93923786782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28768732939 - 2⁵ = 28768732907 is a prime.

It is not a weakly prime, because it can be changed into another prime (28768732439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14384366469 + 14384366470.

It is an arithmetic number, because the mean of its divisors is an integer number (14384366470).

Almost surely, 2^28768732939 is an apocalyptic number.

28768732939 is a deficient number, since it is larger than the sum of its proper divisors (1).

28768732939 is an equidigital number, since it uses as much as digits as its factorization.

28768732939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54867456, while the sum is 64.

The spelling of 28768732939 in words is "twenty-eight billion, seven hundred sixty-eight million, seven hundred thirty-two thousand, nine hundred thirty-nine".