23523664 has 40 divisors (see below), whose sum is σ = 48121920. Its totient is φ = 11117568.

The previous prime is 23523659. The next prime is 23523667. The reversal of 23523664 is 46632532.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23523667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35367 + ... + 36025.

It is an arithmetic number, because the mean of its divisors is an integer number (1203048).

Almost surely, 2^23523664 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 23523664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24060960).

23523664 is an abundant number, since it is smaller than the sum of its proper divisors (24598256).

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

23523664 is a wasteful number, since it uses less digits than its factorization.

23523664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 781 counting only the distinct ones).

The product of its digits is 25920, while the sum is 31.

The square root of 23523664 is about 4850.1199985155. The cubic root of 23523664 is about 286.5288274290.

The spelling of 23523664 in words is "twenty-three million, five hundred twenty-three thousand, six hundred sixty-four".