2238638 has 4 divisors (see below), whose sum is σ = 3357960. Its totient is φ = 1119318.

The previous prime is 2238631. The next prime is 2238647. The reversal of 2238638 is 8368322.

It is a happy number.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2238631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559658 + ... + 559661.

It is an arithmetic number, because the mean of its divisors is an integer number (839490).

2^2238638 is an apocalyptic number.

2238638 is a deficient number, since it is larger than the sum of its proper divisors (1119322).

2238638 is a wasteful number, since it uses less digits than its factorization.

2238638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119321.

The product of its digits is 13824, while the sum is 32.

The square root of 2238638 is about 1496.2078732583. The cubic root of 2238638 is about 130.8161280290.

The spelling of 2238638 in words is "two million, two hundred thirty-eight thousand, six hundred thirty-eight".