23665938 has 32 divisors (see below), whose sum is σ = 51347520. Its totient is φ = 7242240.

The previous prime is 23665937. The next prime is 23665949. The reversal of 23665938 is 83956632.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23665938.

It is not an unprimeable number, because it can be changed into a prime (23665937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1353 + ... + 7011.

It is an arithmetic number, because the mean of its divisors is an integer number (1604610).

Almost surely, 2^23665938 is an apocalyptic number.

23665938 is an abundant number, since it is smaller than the sum of its proper divisors (27681582).

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

23665938 is a wasteful number, since it uses less digits than its factorization.

23665938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5722.

The product of its digits is 233280, while the sum is 42.

The square root of 23665938 is about 4864.7649480730. The cubic root of 23665938 is about 287.1053205626.

The spelling of 23665938 in words is "twenty-three million, six hundred sixty-five thousand, nine hundred thirty-eight".