13405326 has 32 divisors (see below), whose sum is σ = 29552256. Its totient is φ = 4020000.

The previous prime is 13405309. The next prime is 13405349. The reversal of 13405326 is 62350431.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13405296 and 13405305.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5661 + ... + 7671.

It is an arithmetic number, because the mean of its divisors is an integer number (923508).

Almost surely, 2^13405326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13405326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14776128).

13405326 is an abundant number, since it is smaller than the sum of its proper divisors (16146930).

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

13405326 is a wasteful number, since it uses less digits than its factorization.

13405326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 13405326 is about 3661.3284474354. The cubic root of 13405326 is about 237.5522381862.

Adding to 13405326 its reverse (62350431), we get a palindrome (75755757).

It can be divided in two parts, 13405 and 326, that added together give a palindrome (13731).

The spelling of 13405326 in words is "thirteen million, four hundred five thousand, three hundred twenty-six".