23172150 has 48 divisors (see below), whose sum is σ = 57795408. Its totient is φ = 6144000.

The previous prime is 23172137. The next prime is 23172161. The reversal of 23172150 is 5127132.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35830 + ... + 36470.

It is an arithmetic number, because the mean of its divisors is an integer number (1204071).

Almost surely, 2^23172150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23172150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28897704).

23172150 is an abundant number, since it is smaller than the sum of its proper divisors (34623258).

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

23172150 is a wasteful number, since it uses less digits than its factorization.

23172150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 23172150 is about 4813.7459426106. The cubic root of 23172150 is about 285.0944593018.

Adding to 23172150 its reverse (5127132), we get a palindrome (28299282).

The spelling of 23172150 in words is "twenty-three million, one hundred seventy-two thousand, one hundred fifty".