23204320 has 96 divisors (see below), whose sum is σ = 61236000. Its totient is φ = 8257536.

The previous prime is 23204299. The next prime is 23204327. The reversal of 23204320 is 2340232.

23204320 = T₆₉₆ + T₆₉₇ + ... + T₇₈₀.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 23204294 and 23204303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23204327) 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, 51456 + ... + 51904.

It is an arithmetic number, because the mean of its divisors is an integer number (637875).

Almost surely, 2^23204320 is an apocalyptic number.

23204320 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 23204320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30618000).

23204320 is an abundant number, since it is smaller than the sum of its proper divisors (38031680).

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

23204320 is a wasteful number, since it uses less digits than its factorization.

23204320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 23204320 is about 4817.0862562342. The cubic root of 23204320 is about 285.2263309344.

Adding to 23204320 its reverse (2340232), we get a palindrome (25544552).

The spelling of 23204320 in words is "twenty-three million, two hundred four thousand, three hundred twenty".