12631128 has 16 divisors (see below), whose sum is σ = 31577880. Its totient is φ = 4210368.

The previous prime is 12631111. The next prime is 12631141. The reversal of 12631128 is 82113621.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 526297 = 12631128 / (1 + 2 + 6 + 3 + 1 + 1 + 2 + 8).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12631098 and 12631107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263125 + ... + 263172.

Almost surely, 2^12631128 is an apocalyptic number.

It is an amenable number.

12631128 is an abundant number, since it is smaller than the sum of its proper divisors (18946752).

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

12631128 is a wasteful number, since it uses less digits than its factorization.

12631128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526306 (or 526302 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 12631128 is about 3554.0298254235. The cubic root of 12631128 is about 232.8881434274. Note that the first 3 decimals are identical.

Adding to 12631128 its reverse (82113621), we get a palindrome (94744749).

The spelling of 12631128 in words is "twelve million, six hundred thirty-one thousand, one hundred twenty-eight".