12381572 has 24 divisors (see below), whose sum is σ = 24884160. Its totient is φ = 5280480.

The previous prime is 12381557. The next prime is 12381583. The reversal of 12381572 is 27518321.

It is an unprimeable number.

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, 5447 + ... + 7377.

It is an arithmetic number, because the mean of its divisors is an integer number (1036840).

Almost surely, 2^12381572 is an apocalyptic number.

It is an amenable number.

12381572 is an abundant number, since it is smaller than the sum of its proper divisors (12502588).

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

12381572 is a wasteful number, since it uses less digits than its factorization.

12381572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171 (or 2169 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 12381572 is about 3518.7457992870. The cubic root of 12381572 is about 231.3441893398.

Adding to 12381572 its reverse (27518321), we get a palindrome (39899893).

The spelling of 12381572 in words is "twelve million, three hundred eighty-one thousand, five hundred seventy-two".