23720906720 has 96 divisors (see below), whose sum is σ = 64078838208. Its totient is φ = 8128770048.

The previous prime is 23720906689. The next prime is 23720906723. The reversal of 23720906720 is 2760902732.

It is a happy number.

It is a super-3 number, since 3×23720906720³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23720906723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2926994 + ... + 2935086.

It is an arithmetic number, because the mean of its divisors is an integer number (667487898).

Almost surely, 2^23720906720 is an apocalyptic number.

23720906720 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 23720906720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32039419104).

23720906720 is an abundant number, since it is smaller than the sum of its proper divisors (40357931488).

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

23720906720 is a wasteful number, since it uses less digits than its factorization.

23720906720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10732 (or 10724 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 38.

The spelling of 23720906720 in words is "twenty-three billion, seven hundred twenty million, nine hundred six thousand, seven hundred twenty".