23643922 has 4 divisors (see below), whose sum is σ = 35465886. Its totient is φ = 11821960.

The previous prime is 23643913. The next prime is 23643929. The reversal of 23643922 is 22934632.

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., 15515721 + 8128201 = 3939^2 + 2851^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (23643929) 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 as a sum of consecutive naturals, namely, 5910979 + ... + 5910982.

Almost surely, 2^23643922 is an apocalyptic number.

23643922 is a deficient number, since it is larger than the sum of its proper divisors (11821964).

23643922 is a wasteful number, since it uses less digits than its factorization.

23643922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11821963.

The product of its digits is 15552, while the sum is 31.

The square root of 23643922 is about 4862.5016195370. The cubic root of 23643922 is about 287.0162632878.

The spelling of 23643922 in words is "twenty-three million, six hundred forty-three thousand, nine hundred twenty-two".