28438608047 has 2 divisors, whose sum is σ = 28438608048. Its totient is φ = 28438608046.

The previous prime is 28438608007. The next prime is 28438608071. The reversal of 28438608047 is 74080683482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28438608047 - 2⁶ = 28438607983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28438607986 and 28438608004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28438608007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14219304023 + 14219304024.

It is an arithmetic number, because the mean of its divisors is an integer number (14219304024).

Almost surely, 2^28438608047 is an apocalyptic number.

28438608047 is a deficient number, since it is larger than the sum of its proper divisors (1).

28438608047 is an equidigital number, since it uses as much as digits as its factorization.

28438608047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2064384, while the sum is 50.

The spelling of 28438608047 in words is "twenty-eight billion, four hundred thirty-eight million, six hundred eight thousand, forty-seven".