28793726069 has 2 divisors, whose sum is σ = 28793726070. Its totient is φ = 28793726068.

The previous prime is 28793726057. The next prime is 28793726083. The reversal of 28793726069 is 96062739782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22048389169 + 6745336900 = 148487^2 + 82130^2 .

It is a cyclic number.

It is not a de Polignac number, because 28793726069 - 2²⁸ = 28525290613 is a prime.

It is a super-2 number, since 2×28793726069² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28793725999 and 28793726017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28793726009) 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, 14396863034 + 14396863035.

It is an arithmetic number, because the mean of its divisors is an integer number (14396863035).

Almost surely, 2^28793726069 is an apocalyptic number.

It is an amenable number.

28793726069 is a deficient number, since it is larger than the sum of its proper divisors (1).

28793726069 is an equidigital number, since it uses as much as digits as its factorization.

28793726069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13716864, while the sum is 59.

The spelling of 28793726069 in words is "twenty-eight billion, seven hundred ninety-three million, seven hundred twenty-six thousand, sixty-nine".