12163728 has 40 divisors (see below), whose sum is σ = 31598176. Its totient is φ = 4032000.

The previous prime is 12163693. The next prime is 12163729. The reversal of 12163728 is 82736121.

It is a junction number, because it is equal to n+sod(n) for n = 12163695 and 12163704.

It is not an unprimeable number, because it can be changed into a prime (12163729) by changing a digit.

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, 9528 + ... + 10728.

Almost surely, 2^12163728 is an apocalyptic number.

It is an amenable number.

12163728 is an abundant number, since it is smaller than the sum of its proper divisors (19434448).

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

12163728 is a wasteful number, since it uses less digits than its factorization.

12163728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423 (or 1417 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 12163728 is about 3487.6536525292. The cubic root of 12163728 is about 229.9793806342.

Adding to 12163728 its reverse (82736121), we get a palindrome (94899849).

The spelling of 12163728 in words is "twelve million, one hundred sixty-three thousand, seven hundred twenty-eight".