13728776 has 16 divisors (see below), whose sum is σ = 26437740. Its totient is φ = 6678720.

The previous prime is 13728731. The next prime is 13728791. The reversal of 13728776 is 67782731.

It can be written as a sum of positive squares in 2 ways, for example, as 12460900 + 1267876 = 3530^2 + 1126^2 .

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, 22895 + ... + 23486.

Almost surely, 2^13728776 is an apocalyptic number.

It is an amenable number.

13728776 is a deficient number, since it is larger than the sum of its proper divisors (12708964).

13728776 is a wasteful number, since it uses less digits than its factorization.

13728776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46424 (or 46420 counting only the distinct ones).

The product of its digits is 98784, while the sum is 41.

The square root of 13728776 is about 3705.2362947591. The cubic root of 13728776 is about 239.4476650189.

The spelling of 13728776 in words is "thirteen million, seven hundred twenty-eight thousand, seven hundred seventy-six".