12328537 has 4 divisors (see below), whose sum is σ = 13276900. Its totient is φ = 11380176.

The previous prime is 12328531. The next prime is 12328543. The reversal of 12328537 is 73582321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73582321 = 73 ⋅1007977.

It is an interprime number because it is at equal distance from previous prime (12328531) and next prime (12328543).

It can be written as a sum of positive squares in 2 ways, for example, as 4426816 + 7901721 = 2104^2 + 2811^2 .

It is a cyclic number.

It is not a de Polignac number, because 12328537 - 2¹⁹ = 11804249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12328499 and 12328508.

It is not an unprimeable number, because it can be changed into a prime (12328531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474162 + ... + 474187.

It is an arithmetic number, because the mean of its divisors is an integer number (3319225).

Almost surely, 2^12328537 is an apocalyptic number.

It is an amenable number.

12328537 is a deficient number, since it is larger than the sum of its proper divisors (948363).

12328537 is an equidigital number, since it uses as much as digits as its factorization.

12328537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948362.

The product of its digits is 10080, while the sum is 31.

The square root of 12328537 is about 3511.2016461605. The cubic root of 12328537 is about 231.0134047680.

The spelling of 12328537 in words is "twelve million, three hundred twenty-eight thousand, five hundred thirty-seven".