12617904 has 80 divisors (see below), whose sum is σ = 35712992. Its totient is φ = 3815424.

The previous prime is 12617903. The next prime is 12617921. The reversal of 12617904 is 40971621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12617903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45414 + ... + 45690.

Almost surely, 2^12617904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12617904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17856496).

12617904 is an abundant number, since it is smaller than the sum of its proper divisors (23095088).

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

12617904 is a wasteful number, since it uses less digits than its factorization.

12617904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 12617904 is about 3552.1689149026. The cubic root of 12617904 is about 232.8068419477.

The spelling of 12617904 in words is "twelve million, six hundred seventeen thousand, nine hundred four".