12722056 has 16 divisors (see below), whose sum is σ = 23944140. Its totient is φ = 6336960.

The previous prime is 12722053. The next prime is 12722071. The reversal of 12722056 is 65022721.

It can be written as a sum of positive squares in 2 ways, for example, as 12320100 + 401956 = 3510^2 + 634^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12722056.

It is not an unprimeable number, because it can be changed into a prime (12722053) 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, 655 + ... + 5086.

Almost surely, 2^12722056 is an apocalyptic number.

It is an amenable number.

12722056 is a deficient number, since it is larger than the sum of its proper divisors (11222084).

12722056 is a wasteful number, since it uses less digits than its factorization.

12722056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6024 (or 6020 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 12722056 is about 3566.7991252662. The cubic root of 12722056 is about 233.4456402673.

Adding to 12722056 its reverse (65022721), we get a palindrome (77744777).

The spelling of 12722056 in words is "twelve million, seven hundred twenty-two thousand, fifty-six".