23840438 has 8 divisors (see below), whose sum is σ = 35967888. Its totient is φ = 11851144.

The previous prime is 23840437. The next prime is 23840449. The reversal of 23840438 is 83404832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23840437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34106 + ... + 34797.

It is an arithmetic number, because the mean of its divisors is an integer number (4495986).

Almost surely, 2^23840438 is an apocalyptic number.

23840438 is a deficient number, since it is larger than the sum of its proper divisors (12127450).

23840438 is a wasteful number, since it uses less digits than its factorization.

23840438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69078.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 23840438 is about 4882.6670990351. The cubic root of 23840438 is about 287.8092470778.

The spelling of 23840438 in words is "twenty-three million, eight hundred forty thousand, four hundred thirty-eight".