28470229427 has 2 divisors, whose sum is σ = 28470229428. Its totient is φ = 28470229426.

The previous prime is 28470229397. The next prime is 28470229483. The reversal of 28470229427 is 72492207482.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28470229427 - 2¹⁸ = 28469967283 is a prime.

It is not a weakly prime, because it can be changed into another prime (28470229027) 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, 14235114713 + 14235114714.

It is an arithmetic number, because the mean of its divisors is an integer number (14235114714).

Almost surely, 2^28470229427 is an apocalyptic number.

28470229427 is a deficient number, since it is larger than the sum of its proper divisors (1).

28470229427 is an equidigital number, since it uses as much as digits as its factorization.

28470229427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 903168, while the sum is 47.

The spelling of 28470229427 in words is "twenty-eight billion, four hundred seventy million, two hundred twenty-nine thousand, four hundred twenty-seven".