12918624 has 48 divisors (see below), whose sum is σ = 34837488. Its totient is φ = 4188672.

The previous prime is 12918583. The next prime is 12918637. The reversal of 12918624 is 42681921.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1734 + ... + 5370.

It is an arithmetic number, because the mean of its divisors is an integer number (725781).

Almost surely, 2^12918624 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 12918624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17418744).

12918624 is an abundant number, since it is smaller than the sum of its proper divisors (21918864).

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

12918624 is a wasteful number, since it uses less digits than its factorization.

12918624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3687 (or 3679 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 12918624 is about 3594.2487393056. The cubic root of 12918624 is about 234.6418204295.

The spelling of 12918624 in words is "twelve million, nine hundred eighteen thousand, six hundred twenty-four".