12332640 has 48 divisors (see below), whose sum is σ = 38849328. Its totient is φ = 3288576.

The previous prime is 12332609. The next prime is 12332647. The reversal of 12332640 is 4623321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12332647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12367 + ... + 13326.

It is an arithmetic number, because the mean of its divisors is an integer number (809361).

Almost surely, 2^12332640 is an apocalyptic number.

12332640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12332640 is an abundant number, since it is smaller than the sum of its proper divisors (26516688).

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

12332640 is a wasteful number, since it uses less digits than its factorization.

12332640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25711 (or 25703 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 12332640 is about 3511.7858704653. The cubic root of 12332640 is about 231.0390294054.

Adding to 12332640 its reverse (4623321), we get a palindrome (16955961).

The spelling of 12332640 in words is "twelve million, three hundred thirty-two thousand, six hundred forty".