23212172 has 36 divisors (see below), whose sum is σ = 43226064. Its totient is φ = 10896480.

The previous prime is 23212169. The next prime is 23212177. The reversal of 23212172 is 27121232.

It is not an unprimeable number, because it can be changed into a prime (23212177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326897 + ... + 326967.

It is an arithmetic number, because the mean of its divisors is an integer number (1200724).

Almost surely, 2^23212172 is an apocalyptic number.

It is an amenable number.

23212172 is a deficient number, since it is larger than the sum of its proper divisors (20013892).

23212172 is a wasteful number, since it uses less digits than its factorization.

23212172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 157 counting only the distinct ones).

The product of its digits is 336, while the sum is 20.

The square root of 23212172 is about 4817.9012028061. The cubic root of 23212172 is about 285.2584994355.

The spelling of 23212172 in words is "twenty-three million, two hundred twelve thousand, one hundred seventy-two".