13265729 has 8 divisors (see below), whose sum is σ = 14101128. Its totient is φ = 12436480.

The previous prime is 13265723. The next prime is 13265767. The reversal of 13265729 is 92756231.

It can be written as a sum of positive squares in 4 ways, for example, as 2408704 + 10857025 = 1552^2 + 3295^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13265729 - 2⁴ = 13265713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13265723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3389 + ... + 6165.

It is an arithmetic number, because the mean of its divisors is an integer number (1762641).

Almost surely, 2^13265729 is an apocalyptic number.

It is an amenable number.

13265729 is a deficient number, since it is larger than the sum of its proper divisors (835399).

13265729 is a wasteful number, since it uses less digits than its factorization.

13265729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075.

The product of its digits is 22680, while the sum is 35.

The square root of 13265729 is about 3642.2148481384. The cubic root of 13265729 is about 236.7247720409.

The spelling of 13265729 in words is "thirteen million, two hundred sixty-five thousand, seven hundred twenty-nine".