23865438 has 8 divisors (see below), whose sum is σ = 47730888. Its totient is φ = 7955144.

The previous prime is 23865437. The next prime is 23865451. The reversal of 23865438 is 83456832.

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

23865438 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23865396 and 23865405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23865437) 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, 1988781 + ... + 1988792.

It is an arithmetic number, because the mean of its divisors is an integer number (5966361).

Almost surely, 2^23865438 is an apocalyptic number.

23865438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23865438 is a wasteful number, since it uses less digits than its factorization.

23865438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977578.

The product of its digits is 138240, while the sum is 39.

The square root of 23865438 is about 4885.2265044724. The cubic root of 23865438 is about 287.9098145474.

The spelling of 23865438 in words is "twenty-three million, eight hundred sixty-five thousand, four hundred thirty-eight".