12328641 has 12 divisors (see below), whose sum is σ = 19178068. Its totient is φ = 7586784.

The previous prime is 12328637. The next prime is 12328643. The reversal of 12328641 is 14682321.

12328641 is a `hidden beast` number, since 12 + 3 + 2 + 8 + 641 = 666.

12328641 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 2 ways, for example, as 1299600 + 11029041 = 1140^2 + 3321^2 .

It is not a de Polignac number, because 12328641 - 2² = 12328637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12328643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52570 + ... + 52803.

Almost surely, 2^12328641 is an apocalyptic number.

It is an amenable number.

12328641 is a deficient number, since it is larger than the sum of its proper divisors (6849427).

12328641 is a wasteful number, since it uses less digits than its factorization.

12328641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105392 (or 105389 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 12328641 is about 3511.2164558739. The cubic root of 12328641 is about 231.0140543538.

The spelling of 12328641 in words is "twelve million, three hundred twenty-eight thousand, six hundred forty-one".