13278396 has 24 divisors (see below), whose sum is σ = 31085824. Its totient is φ = 4411440.

The previous prime is 13278389. The next prime is 13278401. The reversal of 13278396 is 69387231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2301 + ... + 5643.

Almost surely, 2^13278396 is an apocalyptic number.

It is an amenable number.

13278396 is an abundant number, since it is smaller than the sum of its proper divisors (17807428).

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

13278396 is a wasteful number, since it uses less digits than its factorization.

13278396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3681 (or 3679 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 13278396 is about 3643.9533476706. The cubic root of 13278396 is about 236.8000949217.

The spelling of 13278396 in words is "thirteen million, two hundred seventy-eight thousand, three hundred ninety-six".