23503333240 has 128 divisors (see below), whose sum is σ = 56285798400. Its totient is φ = 8818928640.

The previous prime is 23503333223. The next prime is 23503333253. The reversal of 23503333240 is 4233330532.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23503333199 and 23503333208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6234076 + ... + 6237844.

It is an arithmetic number, because the mean of its divisors is an integer number (439732800).

Almost surely, 2^23503333240 is an apocalyptic number.

23503333240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23503333240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28142899200).

23503333240 is an abundant number, since it is smaller than the sum of its proper divisors (32782465160).

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

23503333240 is a wasteful number, since it uses less digits than its factorization.

23503333240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3965 (or 3961 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 28.

Adding to 23503333240 its reverse (4233330532), we get a palindrome (27736663772).

The spelling of 23503333240 in words is "twenty-three billion, five hundred three million, three hundred thirty-three thousand, two hundred forty".