12745216 has 80 divisors (see below), whose sum is σ = 29069568. Its totient is φ = 5529600.

The previous prime is 12745199. The next prime is 12745217. The reversal of 12745216 is 61254721.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12745217) 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, 174556 + ... + 174628.

Almost surely, 2^12745216 is an apocalyptic number.

12745216 is a gapful number since it is divisible by the number (16) 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 12745216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14534784).

12745216 is an abundant number, since it is smaller than the sum of its proper divisors (16324352).

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

12745216 is an equidigital number, since it uses as much as digits as its factorization.

12745216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 117 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 12745216 is about 3570.0442574288. The cubic root of 12745216 is about 233.5872139120.

Adding to 12745216 its reverse (61254721), we get a palindrome (73999937).

The spelling of 12745216 in words is "twelve million, seven hundred forty-five thousand, two hundred sixteen".