12643235 has 32 divisors (see below), whose sum is σ = 17390592. Its totient is φ = 8743680.

The previous prime is 12643201. The next prime is 12643249. The reversal of 12643235 is 53234621.

12643235 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 12643235 - 2⁸ = 12642979 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173159 + ... + 173231.

It is an arithmetic number, because the mean of its divisors is an integer number (543456).

Almost surely, 2^12643235 is an apocalyptic number.

12643235 is a deficient number, since it is larger than the sum of its proper divisors (4747357).

12643235 is a wasteful number, since it uses less digits than its factorization.

12643235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203.

The product of its digits is 4320, while the sum is 26.

The square root of 12643235 is about 3555.7326952402. The cubic root of 12643235 is about 232.9625278205.

Adding to 12643235 its reverse (53234621), we get a palindrome (65877856).

The spelling of 12643235 in words is "twelve million, six hundred forty-three thousand, two hundred thirty-five".