23172372 has 24 divisors (see below), whose sum is σ = 60076800. Its totient is φ = 7724088.

The previous prime is 23172371. The next prime is 23172379. The reversal of 23172372 is 27327132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23172371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107172 + ... + 107387.

It is an arithmetic number, because the mean of its divisors is an integer number (2503200).

Almost surely, 2^23172372 is an apocalyptic number.

It is an amenable number.

23172372 is an abundant number, since it is smaller than the sum of its proper divisors (36904428).

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

23172372 is a wasteful number, since it uses less digits than its factorization.

23172372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214572 (or 214564 counting only the distinct ones).

The product of its digits is 3528, while the sum is 27.

The square root of 23172372 is about 4813.7690015205. The cubic root of 23172372 is about 285.0953697448.

The spelling of 23172372 in words is "twenty-three million, one hundred seventy-two thousand, three hundred seventy-two".