12128932 has 6 divisors (see below), whose sum is σ = 21225638. Its totient is φ = 6064464.

The previous prime is 12128929. The next prime is 12128947. The reversal of 12128932 is 23982121.

It can be written as a sum of positive squares in only one way, i.e., 11874916 + 254016 = 3446^2 + 504^2 .

It is a super-2 number, since 2×12128932² = 294221982921248, which contains 22 as substring.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 12128932.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1516113 + ... + 1516120.

Almost surely, 2^12128932 is an apocalyptic number.

It is an amenable number.

12128932 is a deficient number, since it is larger than the sum of its proper divisors (9096706).

12128932 is a wasteful number, since it uses less digits than its factorization.

12128932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032237 (or 3032235 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 12128932 is about 3482.6616258259. The cubic root of 12128932 is about 229.7598754163.

The spelling of 12128932 in words is "twelve million, one hundred twenty-eight thousand, nine hundred thirty-two".