13726644 has 12 divisors (see below), whose sum is σ = 32028864. Its totient is φ = 4575544.

The previous prime is 13726639. The next prime is 13726649. The reversal of 13726644 is 44662731.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13726639) and next prime (13726649).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13726649) 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 in 3 ways as a sum of consecutive naturals, for example, 571932 + ... + 571955.

It is an arithmetic number, because the mean of its divisors is an integer number (2669072).

Almost surely, 2^13726644 is an apocalyptic number.

It is an amenable number.

13726644 is an abundant number, since it is smaller than the sum of its proper divisors (18302220).

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

13726644 is a wasteful number, since it uses less digits than its factorization.

13726644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143894 (or 1143892 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 13726644 is about 3704.9485826392. The cubic root of 13726644 is about 239.4352694286.

The spelling of 13726644 in words is "thirteen million, seven hundred twenty-six thousand, six hundred forty-four".