23403204 has 72 divisors (see below), whose sum is σ = 65231712. Its totient is φ = 7015680.

The previous prime is 23403161. The next prime is 23403209. The reversal of 23403204 is 40230432.

23403204 is a `hidden beast` number, since 2 + 340 + 320 + 4 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (23403209) 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 23 ways as a sum of consecutive naturals, for example, 44487 + ... + 45009.

It is an arithmetic number, because the mean of its divisors is an integer number (905996).

Almost surely, 2^23403204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23403204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32615856).

23403204 is an abundant number, since it is smaller than the sum of its proper divisors (41828508).

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

23403204 is a wasteful number, since it uses less digits than its factorization.

23403204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 23403204 is about 4837.6858103850. The cubic root of 23403204 is about 286.0389045157.

Adding to 23403204 its reverse (40230432), we get a palindrome (63633636).

The spelling of 23403204 in words is "twenty-three million, four hundred three thousand, two hundred four".