23404224 has 56 divisors (see below), whose sum is σ = 62748160. Its totient is φ = 7697664.

The previous prime is 23404211. The next prime is 23404229. The reversal of 23404224 is 42240432.

It is a self number, because there is not a number n which added to its sum of digits gives 23404224.

It is not an unprimeable number, because it can be changed into a prime (23404229) 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 7 ways as a sum of consecutive naturals, for example, 14397 + ... + 15939.

Almost surely, 2^23404224 is an apocalyptic number.

23404224 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 23404224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31374080).

23404224 is an abundant number, since it is smaller than the sum of its proper divisors (39343936).

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

23404224 is a wasteful number, since it uses less digits than its factorization.

23404224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637 (or 1627 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 23404224 is about 4837.7912315436. The cubic root of 23404224 is about 286.0430600072.

Adding to 23404224 its reverse (42240432), we get a palindrome (65644656).

The spelling of 23404224 in words is "twenty-three million, four hundred four thousand, two hundred twenty-four".