23213172 has 24 divisors (see below), whose sum is σ = 55912192. Its totient is φ = 7488000.

The previous prime is 23213161. The next prime is 23213173. The reversal of 23213172 is 27131232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23213173) by changing a digit.

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, 30829 + ... + 31572.

Almost surely, 2^23213172 is an apocalyptic number.

It is an amenable number.

23213172 is an abundant number, since it is smaller than the sum of its proper divisors (32699020).

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

23213172 is a wasteful number, since it uses less digits than its factorization.

23213172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62439 (or 62437 counting only the distinct ones).

The product of its digits is 504, while the sum is 21.

The square root of 23213172 is about 4818.0049813175. The cubic root of 23213172 is about 285.2625957692.

The spelling of 23213172 in words is "twenty-three million, two hundred thirteen thousand, one hundred seventy-two".