12783862728 has 96 divisors (see below), whose sum is σ = 42612897600. Its totient is φ = 3371566464.

The previous prime is 12783862727. The next prime is 12783862789. The reversal of 12783862728 is 82726838721.

12783862728 is a `hidden beast` number, since 1 + 2 + 7 + 8 + 3 + 8 + 627 + 2 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12783862727) 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 in 23 ways as a sum of consecutive naturals, for example, 969018 + ... + 982121.

It is an arithmetic number, because the mean of its divisors is an integer number (443884350).

Almost surely, 2^12783862728 is an apocalyptic number.

12783862728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12783862728 is an abundant number, since it is smaller than the sum of its proper divisors (29829034872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12783862728 is a wasteful number, since it uses less digits than its factorization.

12783862728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951171 (or 1951164 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The spelling of 12783862728 in words is "twelve billion, seven hundred eighty-three million, eight hundred sixty-two thousand, seven hundred twenty-eight".