13278856 has 32 divisors (see below), whose sum is σ = 25862040. Its totient is φ = 6386688.

The previous prime is 13278851. The next prime is 13278869. The reversal of 13278856 is 65887231.

13278856 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 4 ways, for example, as 11222500 + 2056356 = 3350^2 + 1434^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13278851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33250 + ... + 33646.

Almost surely, 2^13278856 is an apocalyptic number.

It is an amenable number.

13278856 is a deficient number, since it is larger than the sum of its proper divisors (12583184).

13278856 is a wasteful number, since it uses less digits than its factorization.

13278856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 549 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 13278856 is about 3644.0164653854. The cubic root of 13278856 is about 236.8028293581.

The spelling of 13278856 in words is "thirteen million, two hundred seventy-eight thousand, eight hundred fifty-six".