23503424 has 56 divisors (see below), whose sum is σ = 55644288. Its totient is φ = 9630720.

The previous prime is 23503423. The next prime is 23503439. The reversal of 23503424 is 42430532.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 23503424.

It is not an unprimeable number, because it can be changed into a prime (23503423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9164 + ... + 11444.

It is an arithmetic number, because the mean of its divisors is an integer number (993648).

Almost surely, 2^23503424 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 23503424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27822144).

23503424 is an abundant number, since it is smaller than the sum of its proper divisors (32140864).

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

23503424 is a wasteful number, since it uses less digits than its factorization.

23503424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323 (or 2313 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 23503424 is about 4848.0330031880. The cubic root of 23503424 is about 286.4466264089.

Adding to 23503424 its reverse (42430532), we get a palindrome (65933956).

The spelling of 23503424 in words is "twenty-three million, five hundred three thousand, four hundred twenty-four".