318875306728 has 128 divisors (see below), whose sum is σ = 715187491200. Its totient is φ = 131572940800.

The previous prime is 318875306719. The next prime is 318875306741. The reversal of 318875306728 is 827603578813.

It is a super-2 number, since 2×318875306728² (a number of 24 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47328576 + ... + 47335312.

It is an arithmetic number, because the mean of its divisors is an integer number (5587402275).

Almost surely, 2^318875306728 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 318875306728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357593745600).

318875306728 is an abundant number, since it is smaller than the sum of its proper divisors (396312184472).

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

318875306728 is a wasteful number, since it uses less digits than its factorization.

318875306728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7891 (or 7887 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 318875306728 in words is "three hundred eighteen billion, eight hundred seventy-five million, three hundred six thousand, seven hundred twenty-eight".