23404433240 has 128 divisors (see below), whose sum is σ = 54661003200. Its totient is φ = 9014353920.

The previous prime is 23404433203. The next prime is 23404433257. The reversal of 23404433240 is 4233440432.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30754460 + ... + 30755220.

Almost surely, 2^23404433240 is an apocalyptic number.

23404433240 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 23404433240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27330501600).

23404433240 is an abundant number, since it is smaller than the sum of its proper divisors (31256569960).

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

23404433240 is a wasteful number, since it uses less digits than its factorization.

23404433240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077 (or 1073 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 23404433240 its reverse (4233440432), we get a palindrome (27637873672).

The spelling of 23404433240 in words is "twenty-three billion, four hundred four million, four hundred thirty-three thousand, two hundred forty".