12640116 has 24 divisors (see below), whose sum is σ = 29552544. Its totient is φ = 4204960.

The previous prime is 12640099. The next prime is 12640123. The reversal of 12640116 is 61104621.

It is a junction number, because it is equal to n+sod(n) for n = 12640092 and 12640101.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9211 + ... + 10493.

It is an arithmetic number, because the mean of its divisors is an integer number (1231356).

Almost surely, 2^12640116 is an apocalyptic number.

It is an amenable number.

12640116 is an abundant number, since it is smaller than the sum of its proper divisors (16912428).

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

12640116 is a wasteful number, since it uses less digits than its factorization.

12640116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111 (or 2109 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12640116 is about 3555.2940806634. The cubic root of 12640116 is about 232.9433694885.

Adding to 12640116 its reverse (61104621), we get a palindrome (73744737).

The spelling of 12640116 in words is "twelve million, six hundred forty thousand, one hundred sixteen".