28126711067 has 24 divisors (see below), whose sum is σ = 35548356096. Its totient is φ = 21780566496.

The previous prime is 28126711049. The next prime is 28126711069. The reversal of 28126711067 is 76011762182.

It is a de Polignac number, because none of the positive numbers 2^k-28126711067 is a prime.

It is a super-2 number, since 2×28126711067² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28126711069) 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 in 23 ways as a sum of consecutive naturals, for example, 197333 + ... + 308534.

It is an arithmetic number, because the mean of its divisors is an integer number (1481181504).

Almost surely, 2^28126711067 is an apocalyptic number.

28126711067 is a deficient number, since it is larger than the sum of its proper divisors (7421645029).

28126711067 is a wasteful number, since it uses less digits than its factorization.

28126711067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505947 (or 505934 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 41.

The spelling of 28126711067 in words is "twenty-eight billion, one hundred twenty-six million, seven hundred eleven thousand, sixty-seven".