23736235040 has 144 divisors (see below), whose sum is σ = 69069839832. Its totient is φ = 7659380736.

The previous prime is 23736234997. The next prime is 23736235109. The reversal of 23736235040 is 4053263732.

It can be written as a sum of positive squares in 4 ways, for example, as 23621230864 + 115004176 = 153692^2 + 10724^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44234 + ... + 222326.

Almost surely, 2^23736235040 is an apocalyptic number.

23736235040 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 23736235040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34534919916).

23736235040 is an abundant number, since it is smaller than the sum of its proper divisors (45333604792).

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

23736235040 is a wasteful number, since it uses less digits than its factorization.

23736235040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178139 (or 178124 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 35.

Adding to 23736235040 its reverse (4053263732), we get a palindrome (27789498772).

The spelling of 23736235040 in words is "twenty-three billion, seven hundred thirty-six million, two hundred thirty-five thousand, forty".