32638 has 4 divisors (see below), whose sum is σ = 48960. Its totient is φ = 16318.

The previous prime is 32633. The next prime is 32647. The reversal of 32638 is 83623.

32638 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83623 = 17 ⋅4919.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32633) by changing a digit.

32638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8158 + ... + 8161.

It is an arithmetic number, because the mean of its divisors is an integer number (12240).

2³²⁶³⁸ is an apocalyptic number.

32638 is a deficient number, since it is larger than the sum of its proper divisors (16322).

32638 is a wasteful number, since it uses less digits than its factorization.

32638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16321.

The product of its digits is 864, while the sum is 22.

The square root of 32638 is about 180.6599014724. The cubic root of 32638 is about 31.9576262059.

The spelling of 32638 in words is "thirty-two thousand, six hundred thirty-eight".