23172715 has 8 divisors (see below), whose sum is σ = 27874368. Its totient is φ = 18493440.

The previous prime is 23172701. The next prime is 23172719. The reversal of 23172715 is 51727132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23172715 - 2⁹ = 23172203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23172719) 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 7 ways as a sum of consecutive naturals, for example, 3222 + ... + 7531.

It is an arithmetic number, because the mean of its divisors is an integer number (3484296).

Almost surely, 2^23172715 is an apocalyptic number.

23172715 is a deficient number, since it is larger than the sum of its proper divisors (4701653).

23172715 is a wasteful number, since it uses less digits than its factorization.

23172715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11189.

The product of its digits is 2940, while the sum is 28.

The square root of 23172715 is about 4813.8046283579. The cubic root of 23172715 is about 285.0967764089.

Adding to 23172715 its reverse (51727132), we get a palindrome (74899847).

The spelling of 23172715 in words is "twenty-three million, one hundred seventy-two thousand, seven hundred fifteen".