28288771867 has 2 divisors, whose sum is σ = 28288771868. Its totient is φ = 28288771866.

The previous prime is 28288771843. The next prime is 28288771873. The reversal of 28288771867 is 76817788282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28288771867 - 2⁷ = 28288771739 is a prime.

It is a super-2 number, since 2×28288771867² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28288771799 and 28288771808.

It is not a weakly prime, because it can be changed into another prime (28288771807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14144385933 + 14144385934.

It is an arithmetic number, because the mean of its divisors is an integer number (14144385934).

Almost surely, 2^28288771867 is an apocalyptic number.

28288771867 is a deficient number, since it is larger than the sum of its proper divisors (1).

28288771867 is an equidigital number, since it uses as much as digits as its factorization.

28288771867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33718272, while the sum is 64.

The spelling of 28288771867 in words is "twenty-eight billion, two hundred eighty-eight million, seven hundred seventy-one thousand, eight hundred sixty-seven".