13722729 has 8 divisors (see below), whose sum is σ = 18418752. Its totient is φ = 9087600.

The previous prime is 13722727. The next prime is 13722733. The reversal of 13722729 is 92722731.

13722729 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13722729 - 2¹ = 13722727 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13722729.

It is not an unprimeable number, because it can be changed into a prime (13722721) 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, 14694 + ... + 15599.

It is an arithmetic number, because the mean of its divisors is an integer number (2302344).

Almost surely, 2^13722729 is an apocalyptic number.

It is an amenable number.

13722729 is a deficient number, since it is larger than the sum of its proper divisors (4696023).

13722729 is a wasteful number, since it uses less digits than its factorization.

13722729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30447.

The product of its digits is 10584, while the sum is 33.

The square root of 13722729 is about 3704.4201975478. The cubic root of 13722729 is about 239.4125040143.

The spelling of 13722729 in words is "thirteen million, seven hundred twenty-two thousand, seven hundred twenty-nine".