12643332 has 24 divisors (see below), whose sum is σ = 31770816. Its totient is φ = 3890208.

The previous prime is 12643313. The next prime is 12643349. The reversal of 12643332 is 23334621.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40368 + ... + 40679.

It is an arithmetic number, because the mean of its divisors is an integer number (1323784).

Almost surely, 2^12643332 is an apocalyptic number.

12643332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12643332 is an abundant number, since it is smaller than the sum of its proper divisors (19127484).

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

12643332 is a wasteful number, since it uses less digits than its factorization.

12643332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81067 (or 81065 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

The square root of 12643332 is about 3555.7463351595. The cubic root of 12643332 is about 232.9631235886.

Adding to 12643332 its reverse (23334621), we get a palindrome (35977953).

The spelling of 12643332 in words is "twelve million, six hundred forty-three thousand, three hundred thirty-two".