13227728 has 20 divisors (see below), whose sum is σ = 26050788. Its totient is φ = 6504960.

The previous prime is 13227719. The next prime is 13227749. The reversal of 13227728 is 82772231.

13227728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4631104 + 8596624 = 2152^2 + 2932^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13227694 and 13227703.

It is a congruent number.

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, 5801 + ... + 7752.

Almost surely, 2^13227728 is an apocalyptic number.

It is an amenable number.

13227728 is a deficient number, since it is larger than the sum of its proper divisors (12823060).

13227728 is a wasteful number, since it uses less digits than its factorization.

13227728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13622 (or 13616 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

The square root of 13227728 is about 3636.9943634820. The cubic root of 13227728 is about 236.4985153076.

Adding to 13227728 its reverse (82772231), we get a palindrome (95999959).

The spelling of 13227728 in words is "thirteen million, two hundred twenty-seven thousand, seven hundred twenty-eight".