4227638 has 4 divisors (see below), whose sum is σ = 6341460. Its totient is φ = 2113818.

The previous prime is 4227637. The next prime is 4227659. The reversal of 4227638 is 8367224.

It is a semiprime because it is the product of two primes.

It is a d-powerful number, because it can be written as 4¹¹ + 2⁹ + 2¹⁵ + 7 + 6² + 3 + 8 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4227637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056908 + ... + 1056911.

It is an arithmetic number, because the mean of its divisors is an integer number (1585365).

Almost surely, 2^4227638 is an apocalyptic number.

4227638 is a deficient number, since it is larger than the sum of its proper divisors (2113822).

4227638 is a wasteful number, since it uses less digits than its factorization.

4227638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113821.

The product of its digits is 16128, while the sum is 32.

The square root of 4227638 is about 2056.1220780878. The cubic root of 4227638 is about 161.6959954348.

The spelling of 4227638 in words is "four million, two hundred twenty-seven thousand, six hundred thirty-eight".