28768126838468 has 12 divisors (see below), whose sum is σ = 53305646789052. Its totient is φ = 13537942041600.

The previous prime is 28768126838449. The next prime is 28768126838527. The reversal of 28768126838468 is 86483862186782.

It can be written as a sum of positive squares in 2 ways, for example, as 19773034169344 + 8995092669124 = 4446688^2 + 2999182^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211530344333 + ... + 211530344468.

It is an arithmetic number, because the mean of its divisors is an integer number (4442137232421).

Almost surely, 2^{28768126838468} is an apocalyptic number.

It is an amenable number.

28768126838468 is a deficient number, since it is larger than the sum of its proper divisors (24537519950584).

28768126838468 is a wasteful number, since it uses less digits than its factorization.

28768126838468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423060688822 (or 423060688820 counting only the distinct ones).

The product of its digits is 2378170368, while the sum is 77.

The spelling of 28768126838468 in words is "twenty-eight trillion, seven hundred sixty-eight billion, one hundred twenty-six million, eight hundred thirty-eight thousand, four hundred sixty-eight".