12381612 has 24 divisors (see below), whose sum is σ = 29163456. Its totient is φ = 4088208.

The previous prime is 12381599. The next prime is 12381641. The reversal of 12381612 is 21618321.

It is an alternating number because its digits alternate between odd and even.

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, 3538 + ... + 6105.

It is an arithmetic number, because the mean of its divisors is an integer number (1215144).

Almost surely, 2^12381612 is an apocalyptic number.

12381612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12381612 is an abundant number, since it is smaller than the sum of its proper divisors (16781844).

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

12381612 is a wasteful number, since it uses less digits than its factorization.

12381612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9757 (or 9755 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 12381612 is about 3518.7514831258. The cubic root of 12381612 is about 231.3444384669.

Adding to 12381612 its reverse (21618321), we get a palindrome (33999933).

It can be divided in two parts, 1238 and 1612, that added together give a triangular number (2850 = T₇₅).

The spelling of 12381612 in words is "twelve million, three hundred eighty-one thousand, six hundred twelve".