308485809795280 has 160 divisors (see below), whose sum is σ = 787868760672000. Its totient is φ = 111638579982336.

The previous prime is 308485809795221. The next prime is 308485809795323. The reversal of 308485809795280 is 82597908584803.

It is a junction number, because it is equal to n+sod(n) for n = 308485809795197 and 308485809795206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2742756 + ... + 24989884.

It is an arithmetic number, because the mean of its divisors is an integer number (4924179754200).

Almost surely, 2^{308485809795280} 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 308485809795280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393934380336000).

308485809795280 is an abundant number, since it is smaller than the sum of its proper divisors (479382950876720).

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

308485809795280 is a wasteful number, since it uses less digits than its factorization.

308485809795280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22247421 (or 22247415 counting only the distinct ones).

The product of its (nonzero) digits is 1393459200, while the sum is 76.

The spelling of 308485809795280 in words is "three hundred eight trillion, four hundred eighty-five billion, eight hundred nine million, seven hundred ninety-five thousand, two hundred eighty".