23204664 has 128 divisors (see below), whose sum is σ = 74880000. Its totient is φ = 6521472.

The previous prime is 23204653. The next prime is 23204689. The reversal of 23204664 is 46640232.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155662 + ... + 155810.

It is an arithmetic number, because the mean of its divisors is an integer number (585000).

Almost surely, 2^23204664 is an apocalyptic number.

23204664 is a gapful number since it is divisible by the number (24) 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 23204664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37440000).

23204664 is an abundant number, since it is smaller than the sum of its proper divisors (51675336).

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

23204664 is a wasteful number, since it uses less digits than its factorization.

23204664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 23204664 is about 4817.1219623339. The cubic root of 23204664 is about 285.2277404043.

Adding to 23204664 its reverse (46640232), we get a palindrome (69844896).

The spelling of 23204664 in words is "twenty-three million, two hundred four thousand, six hundred sixty-four".