13444668 has 18 divisors (see below), whose sum is σ = 33985224. Its totient is φ = 4481544.

The previous prime is 13444663. The next prime is 13444721. The reversal of 13444668 is 86644431.

13444668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 373463 = 13444668 / (1 + 3 + 4 + 4 + 4 + 6 + 6 + 8).

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13444663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186696 + ... + 186767.

It is an arithmetic number, because the mean of its divisors is an integer number (1888068).

Almost surely, 2^13444668 is an apocalyptic number.

13444668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13444668 is an abundant number, since it is smaller than the sum of its proper divisors (20540556).

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

13444668 is a wasteful number, since it uses less digits than its factorization.

13444668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373473 (or 373468 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 13444668 is about 3666.6971513884. The cubic root of 13444668 is about 237.7844009439.

The spelling of 13444668 in words is "thirteen million, four hundred forty-four thousand, six hundred sixty-eight".