28304772427 has 2 divisors, whose sum is σ = 28304772428. Its totient is φ = 28304772426.

The previous prime is 28304772409. The next prime is 28304772437. The reversal of 28304772427 is 72427740382.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28304772427 is a prime.

It is not a weakly prime, because it can be changed into another prime (28304772437) 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, 14152386213 + 14152386214.

It is an arithmetic number, because the mean of its divisors is an integer number (14152386214).

Almost surely, 2^28304772427 is an apocalyptic number.

28304772427 is a deficient number, since it is larger than the sum of its proper divisors (1).

28304772427 is an equidigital number, since it uses as much as digits as its factorization.

28304772427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1053696, while the sum is 46.

The spelling of 28304772427 in words is "twenty-eight billion, three hundred four million, seven hundred seventy-two thousand, four hundred twenty-seven".