23316320 has 48 divisors (see below), whose sum is σ = 56382480. Its totient is φ = 9106944.

The previous prime is 23316289. The next prime is 23316323. The reversal of 23316320 is 2361332.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23316292 and 23316301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23316323) 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, 5186 + ... + 8574.

It is an arithmetic number, because the mean of its divisors is an integer number (1174635).

Almost surely, 2^23316320 is an apocalyptic number.

23316320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23316320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28191240).

23316320 is an abundant number, since it is smaller than the sum of its proper divisors (33066160).

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

23316320 is a wasteful number, since it uses less digits than its factorization.

23316320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447 (or 3439 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 23316320 is about 4828.6975469582. The cubic root of 23316320 is about 285.6844940366.

Adding to 23316320 its reverse (2361332), we get a palindrome (25677652).

The spelling of 23316320 in words is "twenty-three million, three hundred sixteen thousand, three hundred twenty".