28556470139 has 2 divisors, whose sum is σ = 28556470140. Its totient is φ = 28556470138.

The previous prime is 28556470127. The next prime is 28556470183. The reversal of 28556470139 is 93107465582.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28556470139 - 2⁸ = 28556469883 is a prime.

It is not a weakly prime, because it can be changed into another prime (28556470339) 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, 14278235069 + 14278235070.

It is an arithmetic number, because the mean of its divisors is an integer number (14278235070).

It is a 1-persistent number, because it is pandigital, but 2⋅28556470139 = 57112940278 is not.

Almost surely, 2^28556470139 is an apocalyptic number.

28556470139 is a deficient number, since it is larger than the sum of its proper divisors (1).

28556470139 is an equidigital number, since it uses as much as digits as its factorization.

28556470139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 28556470139 in words is "twenty-eight billion, five hundred fifty-six million, four hundred seventy thousand, one hundred thirty-nine".