13405226 has 16 divisors (see below), whose sum is σ = 20710080. Its totient is φ = 6504960.

The previous prime is 13405219. The next prime is 13405229. The reversal of 13405226 is 62250431.

It is a super-2 number, since 2×13405226² = 359400168222152, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13405229) 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, 8810 + ... + 10218.

It is an arithmetic number, because the mean of its divisors is an integer number (1294380).

Almost surely, 2^13405226 is an apocalyptic number.

13405226 is a deficient number, since it is larger than the sum of its proper divisors (7304854).

13405226 is a wasteful number, since it uses less digits than its factorization.

13405226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549.

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

The square root of 13405226 is about 3661.3147911645. The cubic root of 13405226 is about 237.5516474935.

Adding to 13405226 its reverse (62250431), we get a palindrome (75655657).

It can be divided in two parts, 13405 and 226, that added together give a palindrome (13631).

The spelling of 13405226 in words is "thirteen million, four hundred five thousand, two hundred twenty-six".