72728000008 has 16 divisors (see below), whose sum is σ = 137715150060. Its totient is φ = 36003960000.

The previous prime is 72728000003. The next prime is 72728000017. The reversal of 72728000008 is 80000082727.

It can be written as a sum of positive squares in 2 ways, for example, as 72523567204 + 204432804 = 269302^2 + 14298^2 .

It is not an unprimeable number, because it can be changed into a prime (72728000003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45004143 + ... + 45005758.

Almost surely, 2^72728000008 is an apocalyptic number.

It is an amenable number.

72728000008 is a deficient number, since it is larger than the sum of its proper divisors (64987150052).

72728000008 is a wasteful number, since it uses less digits than its factorization.

72728000008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90010008 (or 90010004 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The spelling of 72728000008 in words is "seventy-two billion, seven hundred twenty-eight million, eight", and thus it is an aban number.