23172924 has 24 divisors (see below), whose sum is σ = 54958288. Its totient is φ = 7597440.

The previous prime is 23172923. The next prime is 23172949. The reversal of 23172924 is 42927132.

It is a junction number, because it is equal to n+sod(n) for n = 23172891 and 23172900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23172923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15097 + ... + 16560.

Almost surely, 2^23172924 is an apocalyptic number.

It is an amenable number.

23172924 is an abundant number, since it is smaller than the sum of its proper divisors (31785364).

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

23172924 is a wasteful number, since it uses less digits than its factorization.

23172924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31725 (or 31723 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 23172924 is about 4813.8263367097. The cubic root of 23172924 is about 285.0976335240.

The spelling of 23172924 in words is "twenty-three million, one hundred seventy-two thousand, nine hundred twenty-four".