13226405 has 8 divisors (see below), whose sum is σ = 15903000. Its totient is φ = 10560256.

The previous prime is 13226401. The next prime is 13226419. The reversal of 13226405 is 50462231.

13226405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2579236 + 10647169 = 1606^2 + 3263^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13226405 - 2² = 13226401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13226401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521 + ... + 5169.

It is an arithmetic number, because the mean of its divisors is an integer number (1987875).

Almost surely, 2^13226405 is an apocalyptic number.

It is an amenable number.

13226405 is a deficient number, since it is larger than the sum of its proper divisors (2676595).

13226405 is an equidigital number, since it uses as much as digits as its factorization.

13226405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5223.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 13226405 is about 3636.8124779812. The cubic root of 13226405 is about 236.4906304068.

Adding to 13226405 its reverse (50462231), we get a palindrome (63688636).

It can be divided in two parts, 13226 and 405, that added together give a palindrome (13631).

The spelling of 13226405 in words is "thirteen million, two hundred twenty-six thousand, four hundred five".