4238644 has 24 divisors (see below), whose sum is σ = 7959168. Its totient is φ = 1968000.

The previous prime is 4238617. The next prime is 4238651. The reversal of 4238644 is 4468324.

It is a super-2 number, since 2×4238644² = 35932205917472, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5269 + ... + 6019.

It is an arithmetic number, because the mean of its divisors is an integer number (331632).

Almost surely, 2^4238644 is an apocalyptic number.

It is an amenable number.

4238644 is a deficient number, since it is larger than the sum of its proper divisors (3720524).

4238644 is a wasteful number, since it uses less digits than its factorization.

4238644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855 (or 853 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 4238644 is about 2058.7967359601. The cubic root of 4238644 is about 161.8361906635.

It can be divided in two parts, 4238 and 644, that multiplied together give a palindrome (2729272).

The spelling of 4238644 in words is "four million, two hundred thirty-eight thousand, six hundred forty-four".