13072226 has 8 divisors (see below), whose sum is σ = 19722204. Its totient is φ = 6498160.

The previous prime is 13072219. The next prime is 13072229. The reversal of 13072226 is 62227031.

It can be written as a sum of positive squares in 2 ways, for example, as 10896601 + 2175625 = 3301^2 + 1475^2 .

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

It is a plaindrome in base 15.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13072229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18545 + ... + 19236.

Almost surely, 2^13072226 is an apocalyptic number.

13072226 is a deficient number, since it is larger than the sum of its proper divisors (6649978).

13072226 is a wasteful number, since it uses less digits than its factorization.

13072226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37956.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 13072226 is about 3615.5533463081. The cubic root of 13072226 is about 235.5681199375.

Adding to 13072226 its reverse (62227031), we get a palindrome (75299257).

The spelling of 13072226 in words is "thirteen million, seventy-two thousand, two hundred twenty-six".