23642233 has 4 divisors (see below), whose sum is σ = 23697268. Its totient is φ = 23587200.

The previous prime is 23642191. The next prime is 23642239. The reversal of 23642233 is 33224632.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1617984 + 22024249 = 1272^2 + 4693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23642233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23642198 and 23642207.

It is not an unprimeable number, because it can be changed into a prime (23642239) 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 3 ways as a sum of consecutive naturals, for example, 26868 + ... + 27733.

It is an arithmetic number, because the mean of its divisors is an integer number (5924317).

Almost surely, 2^23642233 is an apocalyptic number.

It is an amenable number.

23642233 is a deficient number, since it is larger than the sum of its proper divisors (55035).

23642233 is an equidigital number, since it uses as much as digits as its factorization.

23642233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55034.

The product of its digits is 5184, while the sum is 25.

The square root of 23642233 is about 4862.3279404006. The cubic root of 23642233 is about 287.0094288039.

Adding to 23642233 its reverse (33224632), we get a palindrome (56866865).

The spelling of 23642233 in words is "twenty-three million, six hundred forty-two thousand, two hundred thirty-three".