12781168 has 10 divisors (see below), whose sum is σ = 24763544. Its totient is φ = 6390576.

The previous prime is 12781159. The next prime is 12781183. The reversal of 12781168 is 86118721.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399396 + ... + 399427.

Almost surely, 2^12781168 is an apocalyptic number.

It is an amenable number.

12781168 is a deficient number, since it is larger than the sum of its proper divisors (11982376).

12781168 is an equidigital number, since it uses as much as digits as its factorization.

12781168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798831 (or 798825 counting only the distinct ones).

The product of its digits is 5376, while the sum is 34.

The square root of 12781168 is about 3575.0759432493. The cubic root of 12781168 is about 233.8066437883.

Adding to 12781168 its reverse (86118721), we get a palindrome (98899889).

The spelling of 12781168 in words is "twelve million, seven hundred eighty-one thousand, one hundred sixty-eight".