12247644 has 24 divisors (see below), whose sum is σ = 28667520. Its totient is φ = 4069744.

The previous prime is 12247637. The next prime is 12247649. The reversal of 12247644 is 44674221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12247649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2887 + ... + 5729.

It is an arithmetic number, because the mean of its divisors is an integer number (1194480).

Almost surely, 2^12247644 is an apocalyptic number.

It is an amenable number.

12247644 is an abundant number, since it is smaller than the sum of its proper divisors (16419876).

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

12247644 is a wasteful number, since it uses less digits than its factorization.

12247644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209 (or 3207 counting only the distinct ones).

The product of its digits is 10752, while the sum is 30.

The square root of 12247644 is about 3499.6634123870. The cubic root of 12247644 is about 230.5070351684.

The spelling of 12247644 in words is "twelve million, two hundred forty-seven thousand, six hundred forty-four".