23613320 has 64 divisors (see below), whose sum is σ = 55641600. Its totient is φ = 9008640.

The previous prime is 23613313. The next prime is 23613329. The reversal of 23613320 is 2331632.

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 = 23613292 and 23613301.

It is not an unprimeable number, because it can be changed into a prime (23613329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169811 + ... + 169949.

It is an arithmetic number, because the mean of its divisors is an integer number (869400).

Almost surely, 2^23613320 is an apocalyptic number.

23613320 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 23613320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27820800).

23613320 is an abundant number, since it is smaller than the sum of its proper divisors (32028280).

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

23613320 is a wasteful number, since it uses less digits than its factorization.

23613320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 314 counting only the distinct ones).

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

The square root of 23613320 is about 4859.3538665135. The cubic root of 23613320 is about 286.8923827718.

Adding to 23613320 its reverse (2331632), we get a palindrome (25944952).

The spelling of 23613320 in words is "twenty-three million, six hundred thirteen thousand, three hundred twenty".