23642219 has 4 divisors (see below), whose sum is σ = 23975280. Its totient is φ = 23309160.

The previous prime is 23642191. The next prime is 23642239. The reversal of 23642219 is 91224632.

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

It is a cyclic number.

It is not a de Polignac number, because 23642219 - 2¹² = 23638123 is a prime.

It is a super-2 number, since 2×23642219² = 1117909038487922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23642191 and 23642200.

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, 166424 + ... + 166565.

It is an arithmetic number, because the mean of its divisors is an integer number (5993820).

Almost surely, 2^23642219 is an apocalyptic number.

23642219 is a deficient number, since it is larger than the sum of its proper divisors (333061).

23642219 is an equidigital number, since it uses as much as digits as its factorization.

23642219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333060.

The product of its digits is 5184, while the sum is 29.

The square root of 23642219 is about 4862.3265007607. The cubic root of 23642219 is about 287.0093721520.

The spelling of 23642219 in words is "twenty-three million, six hundred forty-two thousand, two hundred nineteen".