23672217 has 4 divisors (see below), whose sum is σ = 31562960. Its totient is φ = 15781476.

The previous prime is 23672203. The next prime is 23672237. The reversal of 23672217 is 71227632.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23672217 - 2⁶ = 23672153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23672237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3945367 + ... + 3945372.

It is an arithmetic number, because the mean of its divisors is an integer number (7890740).

Almost surely, 2^23672217 is an apocalyptic number.

It is an amenable number.

23672217 is a deficient number, since it is larger than the sum of its proper divisors (7890743).

23672217 is an equidigital number, since it uses as much as digits as its factorization.

23672217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7890742.

The product of its digits is 7056, while the sum is 30.

The square root of 23672217 is about 4865.4102601939. The cubic root of 23672217 is about 287.1307097231.

Adding to 23672217 its reverse (71227632), we get a palindrome (94899849).

The spelling of 23672217 in words is "twenty-three million, six hundred seventy-two thousand, two hundred seventeen".