12644376 has 32 divisors (see below), whose sum is σ = 31752000. Its totient is φ = 4196000.

The previous prime is 12644371. The next prime is 12644393. The reversal of 12644376 is 67344621.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644371) 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, 4975 + ... + 7073.

It is an arithmetic number, because the mean of its divisors is an integer number (992250).

Almost surely, 2^12644376 is an apocalyptic number.

It is an amenable number.

12644376 is an abundant number, since it is smaller than the sum of its proper divisors (19107624).

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

12644376 is a wasteful number, since it uses less digits than its factorization.

12644376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359 (or 2355 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 12644376 is about 3555.8931367520. The cubic root of 12644376 is about 232.9695355800.

Adding to 12644376 its reverse (67344621), we get a palindrome (79988997).

The spelling of 12644376 in words is "twelve million, six hundred forty-four thousand, three hundred seventy-six".