23172304 has 20 divisors (see below), whose sum is σ = 45018820. Its totient is φ = 11554560.

The previous prime is 23172301. The next prime is 23172319. The reversal of 23172304 is 40327132.

It can be written as a sum of positive squares in 2 ways, for example, as 16160400 + 7011904 = 4020^2 + 2648^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23172301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4774 + ... + 8314.

It is an arithmetic number, because the mean of its divisors is an integer number (2250941).

Almost surely, 2^23172304 is an apocalyptic number.

It is an amenable number.

23172304 is a deficient number, since it is larger than the sum of its proper divisors (21846516).

23172304 is a wasteful number, since it uses less digits than its factorization.

23172304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958 (or 3952 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 23172304 is about 4813.7619384427. The cubic root of 23172304 is about 285.0950908710.

Adding to 23172304 its reverse (40327132), we get a palindrome (63499436).

The spelling of 23172304 in words is "twenty-three million, one hundred seventy-two thousand, three hundred four".