3638128 has 20 divisors (see below), whose sum is σ = 7591528. Its totient is φ = 1679040.

The previous prime is 3638113. The next prime is 3638147. The reversal of 3638128 is 8218363.

3638128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3638128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8538 + ... + 8953.

Almost surely, 2^3638128 is an apocalyptic number.

It is an amenable number.

3638128 is an abundant number, since it is smaller than the sum of its proper divisors (3953400).

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

3638128 is a wasteful number, since it uses less digits than its factorization.

3638128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17512 (or 17506 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 3638128 is about 1907.3877424373. The cubic root of 3638128 is about 153.8010586805.

The spelling of 3638128 in words is "three million, six hundred thirty-eight thousand, one hundred twenty-eight".