23172756 has 24 divisors (see below), whose sum is σ = 54151104. Its totient is φ = 7712640.

The previous prime is 23172731. The next prime is 23172763. The reversal of 23172756 is 65727132.

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 7 ways as a sum of consecutive naturals, for example, 11436 + ... + 13308.

It is an arithmetic number, because the mean of its divisors is an integer number (2256296).

Almost surely, 2^23172756 is an apocalyptic number.

It is an amenable number.

23172756 is an abundant number, since it is smaller than the sum of its proper divisors (30978348).

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

23172756 is a wasteful number, since it uses less digits than its factorization.

23172756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911 (or 2909 counting only the distinct ones).

The product of its digits is 17640, while the sum is 33.

The square root of 23172756 is about 4813.8088869418. The cubic root of 23172756 is about 285.0969445515.

Adding to 23172756 its reverse (65727132), we get a palindrome (88899888).

The spelling of 23172756 in words is "twenty-three million, one hundred seventy-two thousand, seven hundred fifty-six".