12648840 has 32 divisors (see below), whose sum is σ = 37946880. Its totient is φ = 3372992.

The previous prime is 12648829. The next prime is 12648841. The reversal of 12648840 is 4884621.

It is not an unprimeable number, because it can be changed into a prime (12648841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52584 + ... + 52823.

It is an arithmetic number, because the mean of its divisors is an integer number (1185840).

Almost surely, 2^12648840 is an apocalyptic number.

12648840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12648840 is an abundant number, since it is smaller than the sum of its proper divisors (25298040).

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

12648840 is a wasteful number, since it uses less digits than its factorization.

12648840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105421 (or 105417 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 12648840 is about 3556.5207717656. The cubic root of 12648840 is about 232.9969483903.

The spelling of 12648840 in words is "twelve million, six hundred forty-eight thousand, eight hundred forty".