23404424 has 24 divisors (see below), whose sum is σ = 45122490. Its totient is φ = 11380608.

The previous prime is 23404417. The next prime is 23404439. The reversal of 23404424 is 42440432.

It can be written as a sum of positive squares in 3 ways, for example, as 22259524 + 1144900 = 4718^2 + 1070^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23404424.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9884 + ... + 12020.

Almost surely, 2^23404424 is an apocalyptic number.

It is an amenable number.

23404424 is a deficient number, since it is larger than the sum of its proper divisors (21718066).

23404424 is a wasteful number, since it uses less digits than its factorization.

23404424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217 (or 2176 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 23404424 is about 4837.8119020896. The cubic root of 23404424 is about 286.0438747953.

Adding to 23404424 its reverse (42440432), we get a palindrome (65844856).

The spelling of 23404424 in words is "twenty-three million, four hundred four thousand, four hundred twenty-four".