23142188 has 12 divisors (see below), whose sum is σ = 40539072. Its totient is φ = 11559600.

The previous prime is 23142187. The next prime is 23142191. The reversal of 23142188 is 88124132.

It is a self number, because there is not a number n which added to its sum of digits gives 23142188.

It is not an unprimeable number, because it can be changed into a prime (23142187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2981 + ... + 7427.

It is an arithmetic number, because the mean of its divisors is an integer number (3378256).

Almost surely, 2^23142188 is an apocalyptic number.

It is an amenable number.

23142188 is a deficient number, since it is larger than the sum of its proper divisors (17396884).

23142188 is a wasteful number, since it uses less digits than its factorization.

23142188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5752 (or 5750 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 23142188 is about 4810.6328066066. The cubic root of 23142188 is about 284.9715289092.

The spelling of 23142188 in words is "twenty-three million, one hundred forty-two thousand, one hundred eighty-eight".