23512320 has 216 divisors, whose sum is σ = 88165896. Its totient is φ = 5750784.

The previous prime is 23512319. The next prime is 23512331. The reversal of 23512320 is 2321532.

It can be written as a sum of positive squares in 4 ways, for example, as 9216 + 23503104 = 96^2 + 4848^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23512293 and 23512302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149682 + ... + 149838.

Almost surely, 2^23512320 is an apocalyptic number.

23512320 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 23512320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44082948).

23512320 is an abundant number, since it is smaller than the sum of its proper divisors (64653576).

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

23512320 is a wasteful number, since it uses less digits than its factorization.

23512320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 23512320 is about 4848.9504018911. The cubic root of 23512320 is about 286.4827616795.

Adding to 23512320 its reverse (2321532), we get a palindrome (25833852).

It can be divided in two parts, 23512 and 320, that added together give a palindrome (23832).

The spelling of 23512320 in words is "twenty-three million, five hundred twelve thousand, three hundred twenty".