23520816 has 120 divisors (see below), whose sum is σ = 74280960. Its totient is φ = 6883200.

The previous prime is 23520811. The next prime is 23520853. The reversal of 23520816 is 61802532.

It is a zygodrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 23520816.

It is not an unprimeable number, because it can be changed into a prime (23520811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48865 + ... + 49343.

It is an arithmetic number, because the mean of its divisors is an integer number (619008).

Almost surely, 2^23520816 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 23520816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37140480).

23520816 is an abundant number, since it is smaller than the sum of its proper divisors (50760144).

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

23520816 is a wasteful number, since it uses less digits than its factorization.

23520816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 23520816 is about 4849.8263886453. The cubic root of 23520816 is about 286.5172636546.

It can be divided in two parts, 23520 and 816, that added together give a square (24336 = 156²).

The spelling of 23520816 in words is "twenty-three million, five hundred twenty thousand, eight hundred sixteen".