28768732439 has 2 divisors, whose sum is σ = 28768732440. Its totient is φ = 28768732438.

The previous prime is 28768732411. The next prime is 28768732451. The reversal of 28768732439 is 93423786782.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28768732439 is a prime.

It is a super-2 number, since 2×28768732439² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28768732459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14384366219 + 14384366220.

It is an arithmetic number, because the mean of its divisors is an integer number (14384366220).

Almost surely, 2^28768732439 is an apocalyptic number.

28768732439 is a deficient number, since it is larger than the sum of its proper divisors (1).

28768732439 is an equidigital number, since it uses as much as digits as its factorization.

28768732439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24385536, while the sum is 59.

The spelling of 28768732439 in words is "twenty-eight billion, seven hundred sixty-eight million, seven hundred thirty-two thousand, four hundred thirty-nine".