23556726240 has 384 divisors, whose sum is σ = 77917012992. Its totient is φ = 5978603520.

The previous prime is 23556726229. The next prime is 23556726269. The reversal of 23556726240 is 4262765532.

It is a happy number.

It is a super-2 number, since 2×23556726240² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23556726192 and 23556726201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 220156267 + ... + 220156373.

It is an arithmetic number, because the mean of its divisors is an integer number (202908888).

Almost surely, 2^23556726240 is an apocalyptic number.

23556726240 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 23556726240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38958506496).

23556726240 is an abundant number, since it is smaller than the sum of its proper divisors (54360286752).

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

23556726240 is a wasteful number, since it uses less digits than its factorization.

23556726240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 42.

The spelling of 23556726240 in words is "twenty-three billion, five hundred fifty-six million, seven hundred twenty-six thousand, two hundred forty".