12406522 has 16 divisors (see below), whose sum is σ = 19543680. Its totient is φ = 5895472.

The previous prime is 12406517. The next prime is 12406529. The reversal of 12406522 is 22560421.

It is a junction number, because it is equal to n+sod(n) for n = 12406493 and 12406502.

It is not an unprimeable number, because it can be changed into a prime (12406529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7179 + ... + 8737.

It is an arithmetic number, because the mean of its divisors is an integer number (1221480).

Almost surely, 2^12406522 is an apocalyptic number.

12406522 is a deficient number, since it is larger than the sum of its proper divisors (7137158).

12406522 is a wasteful number, since it uses less digits than its factorization.

12406522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 12406522 is about 3522.2893123649. The cubic root of 12406522 is about 231.4994783127.

Adding to 12406522 its reverse (22560421), we get a palindrome (34966943).

The spelling of 12406522 in words is "twelve million, four hundred six thousand, five hundred twenty-two".