28838246447 has 2 divisors, whose sum is σ = 28838246448. Its totient is φ = 28838246446.

The previous prime is 28838246443. The next prime is 28838246467. The reversal of 28838246447 is 74464283882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28838246447 - 2² = 28838246443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28838246392 and 28838246401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28838246443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14419123223 + 14419123224.

It is an arithmetic number, because the mean of its divisors is an integer number (14419123224).

Almost surely, 2^28838246447 is an apocalyptic number.

28838246447 is a deficient number, since it is larger than the sum of its proper divisors (1).

28838246447 is an equidigital number, since it uses as much as digits as its factorization.

28838246447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16515072, while the sum is 56.

The spelling of 28838246447 in words is "twenty-eight billion, eight hundred thirty-eight million, two hundred forty-six thousand, four hundred forty-seven".