12648040 has 16 divisors (see below), whose sum is σ = 28458180. Its totient is φ = 5059200.

The previous prime is 12648037. The next prime is 12648047. The reversal of 12648040 is 4084621.

12648040 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 11985444 + 662596 = 3462^2 + 814^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12647996 and 12648014.

It is not an unprimeable number, because it can be changed into a prime (12648047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158061 + ... + 158140.

Almost surely, 2^12648040 is an apocalyptic number.

12648040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12648040 is an abundant number, since it is smaller than the sum of its proper divisors (15810140).

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

12648040 is a wasteful number, since it uses less digits than its factorization.

12648040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316212 (or 316208 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 12648040 is about 3556.4083005189. The cubic root of 12648040 is about 232.9920361747.

The spelling of 12648040 in words is "twelve million, six hundred forty-eight thousand, forty".