12737328 has 40 divisors (see below), whose sum is σ = 33331200. Its totient is φ = 4190784.

The previous prime is 12737327. The next prime is 12737339. The reversal of 12737328 is 82373721.

It is not an unprimeable number, because it can be changed into a prime (12737327) 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, 2113 + ... + 5471.

It is an arithmetic number, because the mean of its divisors is an integer number (833280).

Almost surely, 2^12737328 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 12737328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16665600).

12737328 is an abundant number, since it is smaller than the sum of its proper divisors (20593872).

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

12737328 is a wasteful number, since it uses less digits than its factorization.

12737328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449 (or 3443 counting only the distinct ones).

The product of its digits is 14112, while the sum is 33.

The square root of 12737328 is about 3568.9393382348. The cubic root of 12737328 is about 233.5390150117.

The spelling of 12737328 in words is "twelve million, seven hundred thirty-seven thousand, three hundred twenty-eight".