12740226 has 16 divisors (see below), whose sum is σ = 25570944. Its totient is φ = 4231664.

The previous prime is 12740209. The next prime is 12740249. The reversal of 12740226 is 62204721.

It is a junction number, because it is equal to n+sod(n) for n = 12740196 and 12740205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1866 + ... + 5381.

It is an arithmetic number, because the mean of its divisors is an integer number (1598184).

Almost surely, 2^12740226 is an apocalyptic number.

12740226 is an abundant number, since it is smaller than the sum of its proper divisors (12830718).

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

12740226 is a wasteful number, since it uses less digits than its factorization.

12740226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7545.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 12740226 is about 3569.3453181221. The cubic root of 12740226 is about 233.5567252866.

Adding to 12740226 its reverse (62204721), we get a palindrome (74944947).

The spelling of 12740226 in words is "twelve million, seven hundred forty thousand, two hundred twenty-six".