326722052552728 has 192 divisors, whose sum is σ = 761434993209600. Its totient is φ = 130755000176640.

The previous prime is 326722052552723. The next prime is 326722052552809. The reversal of 326722052552728 is 827255250227623.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326722052552723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 583660300 + ... + 584219812.

It is an arithmetic number, because the mean of its divisors is an integer number (3965807256300).

Almost surely, 2^{326722052552728} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326722052552728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380717496604800).

326722052552728 is an abundant number, since it is smaller than the sum of its proper divisors (434712940656872).

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

326722052552728 is a wasteful number, since it uses less digits than its factorization.

326722052552728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561250 (or 561239 counting only the distinct ones).

The product of its (nonzero) digits is 56448000, while the sum is 58.

The spelling of 326722052552728 in words is "three hundred twenty-six trillion, seven hundred twenty-two billion, fifty-two million, five hundred fifty-two thousand, seven hundred twenty-eight".