28328895187 has 2 divisors, whose sum is σ = 28328895188. Its totient is φ = 28328895186.

The previous prime is 28328895181. The next prime is 28328895191. The reversal of 28328895187 is 78159882382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28328895187 - 2³¹ = 26181411539 is a prime.

It is not a weakly prime, because it can be changed into another prime (28328895181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14164447593 + 14164447594.

It is an arithmetic number, because the mean of its divisors is an integer number (14164447594).

Almost surely, 2^28328895187 is an apocalyptic number.

28328895187 is a deficient number, since it is larger than the sum of its proper divisors (1).

28328895187 is an equidigital number, since it uses as much as digits as its factorization.

28328895187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15482880, while the sum is 61.

The spelling of 28328895187 in words is "twenty-eight billion, three hundred twenty-eight million, eight hundred ninety-five thousand, one hundred eighty-seven".