23520505340 has 24 divisors (see below), whose sum is σ = 49396839072. Its totient is φ = 9407482560.

The previous prime is 23520505331. The next prime is 23520505343. The reversal of 23520505340 is 4350502532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23520505343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280505 + ... + 354575.

It is an arithmetic number, because the mean of its divisors is an integer number (2058201628).

Almost surely, 2^23520505340 is an apocalyptic number.

23520505340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23520505340 is an abundant number, since it is smaller than the sum of its proper divisors (25876333732).

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

23520505340 is a wasteful number, since it uses less digits than its factorization.

23520505340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89957 (or 89955 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 29.

The spelling of 23520505340 in words is "twenty-three billion, five hundred twenty million, five hundred five thousand, three hundred forty".