12162728 has 8 divisors (see below), whose sum is σ = 22805130. Its totient is φ = 6081360.

The previous prime is 12162727. The next prime is 12162739. The reversal of 12162728 is 82726121.

12162728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10252804 + 1909924 = 3202^2 + 1382^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 12162728.

It is not an unprimeable number, because it can be changed into a prime (12162727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760163 + ... + 760178.

Almost surely, 2^12162728 is an apocalyptic number.

It is an amenable number.

12162728 is a deficient number, since it is larger than the sum of its proper divisors (10642402).

12162728 is a wasteful number, since it uses less digits than its factorization.

12162728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520347 (or 1520343 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 12162728 is about 3487.5102867232. The cubic root of 12162728 is about 229.9730781343.

Adding to 12162728 its reverse (82726121), we get a palindrome (94888849).

The spelling of 12162728 in words is "twelve million, one hundred sixty-two thousand, seven hundred twenty-eight".