12704228 has 6 divisors (see below), whose sum is σ = 22232406. Its totient is φ = 6352112.

The previous prime is 12704213. The next prime is 12704231. The reversal of 12704228 is 82240721.

12704228 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 only one way, i.e., 12687844 + 16384 = 3562^2 + 128^2 .

It is a super-2 number, since 2×12704228² = 322794818151968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12704197 and 12704206.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1588025 + ... + 1588032.

It is an arithmetic number, because the mean of its divisors is an integer number (3705401).

Almost surely, 2^12704228 is an apocalyptic number.

It is an amenable number.

12704228 is a deficient number, since it is larger than the sum of its proper divisors (9528178).

12704228 is a wasteful number, since it uses less digits than its factorization.

12704228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3176061 (or 3176059 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 12704228 is about 3564.2990895827. The cubic root of 12704228 is about 233.3365432665.

Adding to 12704228 its reverse (82240721), we get a palindrome (94944949).

The spelling of 12704228 in words is "twelve million, seven hundred four thousand, two hundred twenty-eight".