12388442 has 16 divisors (see below), whose sum is σ = 20368800. Its totient is φ = 5604240.

The previous prime is 12388417. The next prime is 12388459. The reversal of 12388442 is 24488321.

It is a junction number, because it is equal to n+sod(n) for n = 12388399 and 12388408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3809 + ... + 6267.

It is an arithmetic number, because the mean of its divisors is an integer number (1273050).

Almost surely, 2^12388442 is an apocalyptic number.

12388442 is a deficient number, since it is larger than the sum of its proper divisors (7980358).

12388442 is a wasteful number, since it uses less digits than its factorization.

12388442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701.

The product of its digits is 12288, while the sum is 32.

The square root of 12388442 is about 3519.7218640114. The cubic root of 12388442 is about 231.3869690644.

The spelling of 12388442 in words is "twelve million, three hundred eighty-eight thousand, four hundred forty-two".