8078506728 has 16 divisors (see below), whose sum is σ = 20196266880. Its totient is φ = 2692835568.

The previous prime is 8078506699. The next prime is 8078506739. The reversal of 8078506728 is 8276058708.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168302200 + ... + 168302247.

It is an arithmetic number, because the mean of its divisors is an integer number (1262266680).

Almost surely, 2^8078506728 is an apocalyptic number.

It is an amenable number.

8078506728 is an abundant number, since it is smaller than the sum of its proper divisors (12117760152).

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

8078506728 is a wasteful number, since it uses less digits than its factorization.

8078506728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336604456 (or 336604452 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 51.

The square root of 8078506728 is about 89880.5136166900. The cubic root of 8078506728 is about 2006.5209428780.

The spelling of 8078506728 in words is "eight billion, seventy-eight million, five hundred six thousand, seven hundred twenty-eight".