12651312 has 40 divisors (see below), whose sum is σ = 33305904. Its totient is φ = 4136704.

The previous prime is 12651293. The next prime is 12651313. The reversal of 12651312 is 21315621.

It is not an unprimeable number, because it can be changed into a prime (12651313) 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, 58 + ... + 5030.

Almost surely, 2^12651312 is an apocalyptic number.

12651312 is a gapful number since it is divisible by the number (12) 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 12651312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16652952).

12651312 is an abundant number, since it is smaller than the sum of its proper divisors (20654592).

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

12651312 is a wasteful number, since it uses less digits than its factorization.

12651312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037 (or 5031 counting only the distinct ones).

The product of its digits is 360, while the sum is 21.

The square root of 12651312 is about 3556.8682854444. The cubic root of 12651312 is about 233.0121258279.

Adding to 12651312 its reverse (21315621), we get a palindrome (33966933).

The spelling of 12651312 in words is "twelve million, six hundred fifty-one thousand, three hundred twelve".