12340644 has 24 divisors (see below), whose sum is σ = 28909440. Its totient is φ = 4097184.

The previous prime is 12340639. The next prime is 12340661. The reversal of 12340644 is 44604321.

12340644 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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, 1317 + ... + 5139.

It is an arithmetic number, because the mean of its divisors is an integer number (1204560).

Almost surely, 2^12340644 is an apocalyptic number.

It is an amenable number.

12340644 is an abundant number, since it is smaller than the sum of its proper divisors (16568796).

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

12340644 is a wasteful number, since it uses less digits than its factorization.

12340644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4099 (or 4097 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 12340644 is about 3512.9252767459. The cubic root of 12340644 is about 231.0890007680.

Adding to 12340644 its reverse (44604321), we get a palindrome (56944965).

The spelling of 12340644 in words is "twelve million, three hundred forty thousand, six hundred forty-four".