12628644 has 48 divisors (see below), whose sum is σ = 33936000. Its totient is φ = 3580416.

The previous prime is 12628613. The next prime is 12628657. The reversal of 12628644 is 44682621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12012 + ... + 13020.

It is an arithmetic number, because the mean of its divisors is an integer number (707000).

Almost surely, 2^12628644 is an apocalyptic number.

12628644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12628644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16968000).

12628644 is an abundant number, since it is smaller than the sum of its proper divisors (21307356).

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

12628644 is a wasteful number, since it uses less digits than its factorization.

12628644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172 (or 1170 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 12628644 is about 3553.6803457824. The cubic root of 12628644 is about 232.8728760637.

The spelling of 12628644 in words is "twelve million, six hundred twenty-eight thousand, six hundred forty-four".