13226181 has 8 divisors (see below), whose sum is σ = 18203904. Its totient is φ = 8532960.

The previous prime is 13226179. The next prime is 13226189. The reversal of 13226181 is 18162231.

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

It is not a de Polignac number, because 13226181 - 2¹ = 13226179 is a prime.

It is a super-2 number, since 2×13226181² = 349863727689522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13226189) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 71016 + ... + 71201.

It is an arithmetic number, because the mean of its divisors is an integer number (2275488).

Almost surely, 2^13226181 is an apocalyptic number.

It is an amenable number.

13226181 is a deficient number, since it is larger than the sum of its proper divisors (4977723).

13226181 is a wasteful number, since it uses less digits than its factorization.

13226181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142251.

The product of its digits is 576, while the sum is 24.

The square root of 13226181 is about 3636.7816816521. The cubic root of 13226181 is about 236.4892953451.

It can be divided in two parts, 1322 and 6181, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 13226181 in words is "thirteen million, two hundred twenty-six thousand, one hundred eighty-one".