13613226 has 48 divisors (see below), whose sum is σ = 31715712. Its totient is φ = 3879040.

The previous prime is 13613207. The next prime is 13613227. The reversal of 13613226 is 62231631.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13613196 and 13613205.

It is not an unprimeable number, because it can be changed into a prime (13613227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11791 + ... + 12893.

It is an arithmetic number, because the mean of its divisors is an integer number (660744).

Almost surely, 2^13613226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13613226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15857856).

13613226 is an abundant number, since it is smaller than the sum of its proper divisors (18102486).

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

13613226 is a wasteful number, since it uses less digits than its factorization.

13613226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147 (or 1136 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 13613226 is about 3689.6105485539. The cubic root of 13613226 is about 238.7739908094.

Adding to 13613226 its reverse (62231631), we get a palindrome (75844857).

The spelling of 13613226 in words is "thirteen million, six hundred thirteen thousand, two hundred twenty-six".