4231638 has 12 divisors (see below), whose sum is σ = 9168588. Its totient is φ = 1410540.

The previous prime is 4231637. The next prime is 4231663. The reversal of 4231638 is 8361324.

It is a happy number.

4231638 is a `hidden beast` number, since 4 + 23 + 1 + 638 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4231637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117528 + ... + 117563.

It is an arithmetic number, because the mean of its divisors is an integer number (764049).

Almost surely, 2^4231638 is an apocalyptic number.

4231638 is an abundant number, since it is smaller than the sum of its proper divisors (4936950).

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

4231638 is a wasteful number, since it uses less digits than its factorization.

4231638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235099 (or 235096 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 4231638 is about 2057.0945530043. The cubic root of 4231638 is about 161.7469758406.

The spelling of 4231638 in words is "four million, two hundred thirty-one thousand, six hundred thirty-eight".