23009504 has 48 divisors (see below), whose sum is σ = 52214400. Its totient is φ = 9777024.

The previous prime is 23009489. The next prime is 23009521. The reversal of 23009504 is 40590032.

It is a self number, because there is not a number n which added to its sum of digits gives 23009504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30767 + ... + 31505.

It is an arithmetic number, because the mean of its divisors is an integer number (1087800).

Almost surely, 2^23009504 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 23009504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26107200).

23009504 is an abundant number, since it is smaller than the sum of its proper divisors (29204896).

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

23009504 is a wasteful number, since it uses less digits than its factorization.

23009504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 23009504 is about 4796.8222814693. The cubic root of 23009504 is about 284.4258637675.

Adding to 23009504 its reverse (40590032), we get a palindrome (63599536).

The spelling of 23009504 in words is "twenty-three million, nine thousand, five hundred four".