13409744 has 20 divisors (see below), whose sum is σ = 27349440. Its totient is φ = 6351840.

The previous prime is 13409741. The next prime is 13409761. The reversal of 13409744 is 44790431.

It is a happy number.

13409744 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13409744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13409741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21752 + ... + 22359.

It is an arithmetic number, because the mean of its divisors is an integer number (1367472).

Almost surely, 2^13409744 is an apocalyptic number.

It is an amenable number.

13409744 is an abundant number, since it is smaller than the sum of its proper divisors (13939696).

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

13409744 is a wasteful number, since it uses less digits than its factorization.

13409744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44138 (or 44132 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 13409744 is about 3661.9317306580. The cubic root of 13409744 is about 237.5783320565.

The spelling of 13409744 in words is "thirteen million, four hundred nine thousand, seven hundred forty-four".