23189817 has 16 divisors (see below), whose sum is σ = 35404160. Its totient is φ = 13226112.

The previous prime is 23189801. The next prime is 23189833. The reversal of 23189817 is 71898132.

It is an interprime number because it is at equal distance from previous prime (23189801) and next prime (23189833).

It is not a de Polignac number, because 23189817 - 2⁴ = 23189801 is a prime.

It is a super-2 number, since 2×23189817² = 1075535224986978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23189867) 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 15 ways as a sum of consecutive naturals, for example, 21159 + ... + 22227.

It is an arithmetic number, because the mean of its divisors is an integer number (2212760).

Almost surely, 2^23189817 is an apocalyptic number.

It is an amenable number.

23189817 is a deficient number, since it is larger than the sum of its proper divisors (12214343).

23189817 is a wasteful number, since it uses less digits than its factorization.

23189817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112.

The product of its digits is 24192, while the sum is 39.

The square root of 23189817 is about 4815.5806503474. The cubic root of 23189817 is about 285.1668951685.

The spelling of 23189817 in words is "twenty-three million, one hundred eighty-nine thousand, eight hundred seventeen".