13722726 has 8 divisors (see below), whose sum is σ = 27445464. Its totient is φ = 4574240.

The previous prime is 13722721. The next prime is 13722727. The reversal of 13722726 is 62722731.

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

13722726 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 13722693 and 13722702.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1143555 + ... + 1143566.

It is an arithmetic number, because the mean of its divisors is an integer number (3430683).

Almost surely, 2^13722726 is an apocalyptic number.

13722726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13722726 is a wasteful number, since it uses less digits than its factorization.

13722726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287126.

The product of its digits is 7056, while the sum is 30.

The square root of 13722726 is about 3704.4197926261. The cubic root of 13722726 is about 239.4124865679.

The spelling of 13722726 in words is "thirteen million, seven hundred twenty-two thousand, seven hundred twenty-six".