72808072728 has 16 divisors (see below), whose sum is σ = 182020181880. Its totient is φ = 24269357568.

The previous prime is 72808072709. The next prime is 72808072739. The reversal of 72808072728 is 82727080827.

It is a congruent number.

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, 1516834825 + ... + 1516834872.

Almost surely, 2^72808072728 is an apocalyptic number.

It is an amenable number.

72808072728 is an abundant number, since it is smaller than the sum of its proper divisors (109212109152).

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

72808072728 is a wasteful number, since it uses less digits than its factorization.

72808072728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033669706 (or 3033669702 counting only the distinct ones).

The product of its (nonzero) digits is 1404928, while the sum is 51.

The spelling of 72808072728 in words is "seventy-two billion, eight hundred eight million, seventy-two thousand, seven hundred twenty-eight".