12744522 has 48 divisors (see below), whose sum is σ = 32340672. Its totient is φ = 3551040.

The previous prime is 12744463. The next prime is 12744527. The reversal of 12744522 is 22544721.

12744522 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

12744522 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (12744527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3933 + ... + 6399.

It is an arithmetic number, because the mean of its divisors is an integer number (673764).

Almost surely, 2^12744522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12744522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16170336).

12744522 is an abundant number, since it is smaller than the sum of its proper divisors (19596150).

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

12744522 is a wasteful number, since it uses less digits than its factorization.

12744522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523 (or 2520 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 12744522 is about 3569.9470584310. The cubic root of 12744522 is about 233.5829740867.

The spelling of 12744522 in words is "twelve million, seven hundred forty-four thousand, five hundred twenty-two".