12320648 has 36 divisors (see below), whose sum is σ = 24880815. Its totient is φ = 5718528.

The previous prime is 12320647. The next prime is 12320653. The reversal of 12320648 is 84602321.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 10252804 + 2067844 = 3202^2 + 1438^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2482.

It is a Duffinian number.

It is a zygodrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12320647) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 168740 + ... + 168812.

Almost surely, 2^12320648 is an apocalyptic number.

It is an amenable number.

12320648 is an abundant number, since it is smaller than the sum of its proper divisors (12560167).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12320648 is an equidigital number, since it uses as much as digits as its factorization.

12320648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 12320648 is about 3510.0780618100. The cubic root of 12320648 is about 230.9641192872.

Adding to 12320648 its reverse (84602321), we get a palindrome (96922969).

The spelling of 12320648 in words is "twelve million, three hundred twenty thousand, six hundred forty-eight".