12406628 has 18 divisors (see below), whose sum is σ = 23511474. Its totient is φ = 5725824.

The previous prime is 12406627. The next prime is 12406631. The reversal of 12406628 is 82660421.

It can be written as a sum of positive squares in 3 ways, for example, as 1170724 + 11235904 = 1082^2 + 3352^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12406628.

It is not an unprimeable number, because it can be changed into a prime (12406621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8501 + ... + 9852.

It is an arithmetic number, because the mean of its divisors is an integer number (1306193).

Almost surely, 2^12406628 is an apocalyptic number.

It is an amenable number.

12406628 is a deficient number, since it is larger than the sum of its proper divisors (11104846).

12406628 is a wasteful number, since it uses less digits than its factorization.

12406628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18383 (or 18368 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 12406628 is about 3522.3043593648. The cubic root of 12406628 is about 231.5001376131.

The spelling of 12406628 in words is "twelve million, four hundred six thousand, six hundred twenty-eight".