8067706728 has 64 divisors (see below), whose sum is σ = 21717720000. Its totient is φ = 2488138752.

The previous prime is 8067706727. The next prime is 8067706769. The reversal of 8067706728 is 8276077608.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (8067706723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143503 + ... + 191646.

It is an arithmetic number, because the mean of its divisors is an integer number (339339375).

Almost surely, 2^8067706728 is an apocalyptic number.

It is an amenable number.

8067706728 is an abundant number, since it is smaller than the sum of its proper divisors (13650013272).

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

8067706728 is a wasteful number, since it uses less digits than its factorization.

8067706728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335234 (or 335230 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 51.

The square root of 8067706728 is about 89820.4137599020. The cubic root of 8067706728 is about 2005.6263843902.

The spelling of 8067706728 in words is "eight billion, sixty-seven million, seven hundred six thousand, seven hundred twenty-eight".