23316560 has 20 divisors (see below), whose sum is σ = 54211188. Its totient is φ = 9326592.

The previous prime is 23316547. The next prime is 23316583. The reversal of 23316560 is 6561332.

It can be written as a sum of positive squares in 2 ways, for example, as 6210064 + 17106496 = 2492^2 + 4136^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145649 + ... + 145808.

Almost surely, 2^23316560 is an apocalyptic number.

23316560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23316560 is an abundant number, since it is smaller than the sum of its proper divisors (30894628).

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

23316560 is a wasteful number, since it uses less digits than its factorization.

23316560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291470 (or 291464 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 23316560 is about 4828.7223983161. The cubic root of 23316560 is about 285.6854742376.

Adding to 23316560 its reverse (6561332), we get a palindrome (29877892).

The spelling of 23316560 in words is "twenty-three million, three hundred sixteen thousand, five hundred sixty".