23509424 has 20 divisors (see below), whose sum is σ = 45956136. Its totient is φ = 11649792.

The previous prime is 23509411. The next prime is 23509469. The reversal of 23509424 is 42490532.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4694 + ... + 8309.

Almost surely, 2^23509424 is an apocalyptic number.

It is an amenable number.

23509424 is a deficient number, since it is larger than the sum of its proper divisors (22446712).

23509424 is a wasteful number, since it uses less digits than its factorization.

23509424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13124 (or 13118 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 23509424 is about 4848.6517713690. The cubic root of 23509424 is about 286.4709992199.

Adding to 23509424 its reverse (42490532), we get a palindrome (65999956).

The spelling of 23509424 in words is "twenty-three million, five hundred nine thousand, four hundred twenty-four".