23563320 has 64 divisors (see below), whose sum is σ = 77120640. Its totient is φ = 5712000.

The previous prime is 23563291. The next prime is 23563321. The reversal of 23563320 is 2336532.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23563321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7606 + ... + 10245.

It is an arithmetic number, because the mean of its divisors is an integer number (1205010).

Almost surely, 2^23563320 is an apocalyptic number.

23563320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23563320 is an abundant number, since it is smaller than the sum of its proper divisors (53557320).

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

23563320 is a wasteful number, since it uses less digits than its factorization.

23563320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17876 (or 17872 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 24.

The square root of 23563320 is about 4854.2064232993. The cubic root of 23563320 is about 286.6897463540.

Adding to 23563320 its reverse (2336532), we get a palindrome (25899852).

The spelling of 23563320 in words is "twenty-three million, five hundred sixty-three thousand, three hundred twenty".