4128636 has 12 divisors (see below), whose sum is σ = 9633512. Its totient is φ = 1376208.

The previous prime is 4128623. The next prime is 4128689. The reversal of 4128636 is 6368214.

It is a tau number, because it is divible by the number of its divisors (12).

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, 172015 + ... + 172038.

Almost surely, 2^4128636 is an apocalyptic number.

It is an amenable number.

4128636 is an abundant number, since it is smaller than the sum of its proper divisors (5504876).

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

4128636 is a wasteful number, since it uses less digits than its factorization.

4128636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344060 (or 344058 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 4128636 is about 2031.9045253161. The cubic root of 4128636 is about 160.4238242566.

The spelling of 4128636 in words is "four million, one hundred twenty-eight thousand, six hundred thirty-six".