12615226 has 8 divisors (see below), whose sum is σ = 20378484. Its totient is φ = 5822400.

The previous prime is 12615199. The next prime is 12615257. The reversal of 12615226 is 62251621.

12615226 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 2 ways, for example, as 12609601 + 5625 = 3551^2 + 75^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12615226.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242575 + ... + 242626.

Almost surely, 2^12615226 is an apocalyptic number.

12615226 is a deficient number, since it is larger than the sum of its proper divisors (7763258).

12615226 is a wasteful number, since it uses less digits than its factorization.

12615226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485216.

The product of its digits is 1440, while the sum is 25.

The square root of 12615226 is about 3551.7919421047. The cubic root of 12615226 is about 232.7903706216.

Adding to 12615226 its reverse (62251621), we get a palindrome (74866847).

The spelling of 12615226 in words is "twelve million, six hundred fifteen thousand, two hundred twenty-six".