12788648 has 8 divisors (see below), whose sum is σ = 23978730. Its totient is φ = 6394320.

The previous prime is 12788639. The next prime is 12788669. The reversal of 12788648 is 84688721.

It can be written as a sum of positive squares in only one way, i.e., 9972964 + 2815684 = 3158^2 + 1678^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 12788599 and 12788608.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 799283 + ... + 799298.

Almost surely, 2^12788648 is an apocalyptic number.

It is an amenable number.

12788648 is a deficient number, since it is larger than the sum of its proper divisors (11190082).

12788648 is a wasteful number, since it uses less digits than its factorization.

12788648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598587 (or 1598583 counting only the distinct ones).

The product of its digits is 172032, while the sum is 44.

The square root of 12788648 is about 3576.1219218589. The cubic root of 12788648 is about 233.8522455841.

The spelling of 12788648 in words is "twelve million, seven hundred eighty-eight thousand, six hundred forty-eight".