23645023240 has 32 divisors (see below), whose sum is σ = 56330792280. Its totient is φ = 8901655552.

The previous prime is 23645023231. The next prime is 23645023243. The reversal of 23645023240 is 4232054632.

It can be written as a sum of positive squares in 4 ways, for example, as 22600311556 + 1044711684 = 150334^2 + 32322^2 .

It is not an unprimeable number, because it can be changed into a prime (23645023243) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17385367 + ... + 17386726.

Almost surely, 2^23645023240 is an apocalyptic number.

23645023240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23645023240 is an abundant number, since it is smaller than the sum of its proper divisors (32685769040).

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

23645023240 is a wasteful number, since it uses less digits than its factorization.

23645023240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34772121 (or 34772117 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 23645023240 its reverse (4232054632), we get a palindrome (27877077872).

The spelling of 23645023240 in words is "twenty-three billion, six hundred forty-five million, twenty-three thousand, two hundred forty".