40238 has 16 divisors (see below), whose sum is σ = 69120. Its totient is φ = 17400.

The previous prime is 40237. The next prime is 40241. The reversal of 40238 is 83204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653 + ... + 711.

It is an arithmetic number, because the mean of its divisors is an integer number (4320).

2⁴⁰²³⁸ is an apocalyptic number.

40238 is a deficient number, since it is larger than the sum of its proper divisors (28882).

40238 is a wasteful number, since it uses less digits than its factorization.

40238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 40238 is about 200.5941175608. The cubic root of 40238 is about 34.2672138947.

The spelling of 40238 in words is "forty thousand, two hundred thirty-eight".