23286172 has 108 divisors (see below), whose sum is σ = 55492920. Its totient is φ = 8491392.

The previous prime is 23286157. The next prime is 23286173. The reversal of 23286172 is 27168232.

23286172 is nontrivially palindromic in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23286173) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 629338 + ... + 629374.

Almost surely, 2^23286172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23286172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27746460).

23286172 is an abundant number, since it is smaller than the sum of its proper divisors (32206748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23286172 is a wasteful number, since it uses less digits than its factorization.

23286172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 78 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 23286172 is about 4825.5747844169. The cubic root of 23286172 is about 285.5613109196.

The spelling of 23286172 in words is "twenty-three million, two hundred eighty-six thousand, one hundred seventy-two".