23938 has 4 divisors (see below), whose sum is σ = 35910. Its totient is φ = 11968.

The previous prime is 23929. The next prime is 23957. The reversal of 23938 is 83932.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 23409 + 529 = 153^2 + 23^2 .

It is a congruent number.

It is an unprimeable number.

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, 5983 + ... + 5986.

2²³⁹³⁸ is an apocalyptic number.

23938 is a deficient number, since it is larger than the sum of its proper divisors (11972).

23938 is a wasteful number, since it uses less digits than its factorization.

23938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11971.

The product of its digits is 1296, while the sum is 25.

The square root of 23938 is about 154.7191003076. The cubic root of 23938 is about 28.8201312439.

It can be divided in two parts, 2393 and 8, that added together give a 4-th power (2401 = 7⁴).

The spelling of 23938 in words is "twenty-three thousand, nine hundred thirty-eight".