13356729 has 6 divisors (see below), whose sum is σ = 19293066. Its totient is φ = 8904480.

The previous prime is 13356719. The next prime is 13356779. The reversal of 13356729 is 92765331.

It can be written as a sum of positive squares in only one way, i.e., 11799225 + 1557504 = 3435^2 + 1248^2 .

It is not a de Polignac number, because 13356729 - 2⁵ = 13356697 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13356693 and 13356702.

It is not an unprimeable number, because it can be changed into a prime (13356719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 742032 + ... + 742049.

It is an arithmetic number, because the mean of its divisors is an integer number (3215511).

Almost surely, 2^13356729 is an apocalyptic number.

It is an amenable number.

13356729 is a deficient number, since it is larger than the sum of its proper divisors (5936337).

13356729 is a wasteful number, since it uses less digits than its factorization.

13356729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484087 (or 1484084 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 13356729 is about 3654.6858962160. The cubic root of 13356729 is about 237.2648324081.

The spelling of 13356729 in words is "thirteen million, three hundred fifty-six thousand, seven hundred twenty-nine".