23403424 has 48 divisors (see below), whose sum is σ = 53234496. Its totient is φ = 10009600.

The previous prime is 23403379. The next prime is 23403431. The reversal of 23403424 is 42430432.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 23403395 and 23403404.

It is an unprimeable number.

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, 4029 + ... + 7939.

It is an arithmetic number, because the mean of its divisors is an integer number (1109052).

Almost surely, 2^23403424 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 23403424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26617248).

23403424 is an abundant number, since it is smaller than the sum of its proper divisors (29831072).

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

23403424 is a wasteful number, since it uses less digits than its factorization.

23403424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949 (or 3941 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 23403424 is about 4837.7085484762. The cubic root of 23403424 is about 286.0398008084.

Adding to 23403424 its reverse (42430432), we get a palindrome (65833856).

The spelling of 23403424 in words is "twenty-three million, four hundred three thousand, four hundred twenty-four".