23643872 has 72 divisors (see below), whose sum is σ = 57398544. Its totient is φ = 9526272.

The previous prime is 23643863. The next prime is 23643877. The reversal of 23643872 is 27834632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23643877) 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 11 ways as a sum of consecutive naturals, for example, 26213 + ... + 27099.

It is an arithmetic number, because the mean of its divisors is an integer number (797202).

Almost surely, 2^23643872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23643872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28699272).

23643872 is an abundant number, since it is smaller than the sum of its proper divisors (33754672).

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

23643872 is a wasteful number, since it uses less digits than its factorization.

23643872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928 (or 913 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 23643872 is about 4862.4964781478. The cubic root of 23643872 is about 287.0160609691.

The spelling of 23643872 in words is "twenty-three million, six hundred forty-three thousand, eight hundred seventy-two".