12128935 has 64 divisors (see below), whose sum is σ = 19998720. Its totient is φ = 6842880.

The previous prime is 12128929. The next prime is 12128947. The reversal of 12128935 is 53982121.

12128935 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12128935 - 2⁵ = 12128903 is a prime.

It is a super-2 number, since 2×12128935² = 294222128468450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12128897 and 12128906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 198805 + ... + 198865.

It is an arithmetic number, because the mean of its divisors is an integer number (312480).

It is a vampire number, since it can be written as 1235 ⋅ 9821 (with its own digits).

Almost surely, 2^12128935 is an apocalyptic number.

12128935 is a deficient number, since it is larger than the sum of its proper divisors (7869785).

12128935 is a wasteful number, since it uses less digits than its factorization.

12128935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128.

The product of its digits is 4320, while the sum is 31.

The square root of 12128935 is about 3482.6620565309. The cubic root of 12128935 is about 229.7598943595.

The spelling of 12128935 in words is "twelve million, one hundred twenty-eight thousand, nine hundred thirty-five".