13728433 has 2 divisors, whose sum is σ = 13728434. Its totient is φ = 13728432.

The previous prime is 13728427. The next prime is 13728437. The reversal of 13728433 is 33482731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8025889 + 5702544 = 2833^2 + 2388^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13728433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13728395 and 13728404.

It is not a weakly prime, because it can be changed into another prime (13728437) by changing a digit.

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 as a sum of consecutive naturals, namely, 6864216 + 6864217.

It is an arithmetic number, because the mean of its divisors is an integer number (6864217).

Almost surely, 2^13728433 is an apocalyptic number.

It is an amenable number.

13728433 is a deficient number, since it is larger than the sum of its proper divisors (1).

13728433 is an equidigital number, since it uses as much as digits as its factorization.

13728433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 13728433 is about 3705.1900086230. The cubic root of 13728433 is about 239.4456708807.

It can be divided in two parts, 13728 and 433, that added together give a square (14161 = 119²).

The spelling of 13728433 in words is "thirteen million, seven hundred twenty-eight thousand, four hundred thirty-three".