23520656 has 40 divisors (see below), whose sum is σ = 49398624. Its totient is φ = 10805760.

The previous prime is 23520649. The next prime is 23520659. The reversal of 23520656 is 65602532.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23520659) 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, 10691 + ... + 12701.

Almost surely, 2^23520656 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 23520656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24699312).

23520656 is an abundant number, since it is smaller than the sum of its proper divisors (25877968).

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

23520656 is a wasteful number, since it uses less digits than its factorization.

23520656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079 (or 2073 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 23520656 is about 4849.8098931814. The cubic root of 23520656 is about 286.5166139766.

The spelling of 23520656 in words is "twenty-three million, five hundred twenty thousand, six hundred fifty-six".