12144664 has 32 divisors (see below), whose sum is σ = 27557280. Its totient is φ = 4898304.

The previous prime is 12144637. The next prime is 12144677. The reversal of 12144664 is 46644121.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 5427 + ... + 7330.

It is an arithmetic number, because the mean of its divisors is an integer number (861165).

Almost surely, 2^12144664 is an apocalyptic number.

12144664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12144664 is an abundant number, since it is smaller than the sum of its proper divisors (15412616).

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

12144664 is a wasteful number, since it uses less digits than its factorization.

12144664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12787 (or 12783 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 12144664 is about 3484.9195112656. The cubic root of 12144664 is about 229.8591702458.

Adding to 12144664 its reverse (46644121), we get a palindrome (58788785).

The spelling of 12144664 in words is "twelve million, one hundred forty-four thousand, six hundred sixty-four".