28260021067 has 2 divisors, whose sum is σ = 28260021068. Its totient is φ = 28260021066.

The previous prime is 28260021037. The next prime is 28260021071. The reversal of 28260021067 is 76012006282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28260021067 - 2⁷ = 28260020939 is a prime.

It is not a weakly prime, because it can be changed into another prime (28260021037) 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, 14130010533 + 14130010534.

It is an arithmetic number, because the mean of its divisors is an integer number (14130010534).

Almost surely, 2^28260021067 is an apocalyptic number.

28260021067 is a deficient number, since it is larger than the sum of its proper divisors (1).

28260021067 is an equidigital number, since it uses as much as digits as its factorization.

28260021067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 28260021067 in words is "twenty-eight billion, two hundred sixty million, twenty-one thousand, sixty-seven".