8281785928 has 16 divisors (see below), whose sum is σ = 16722837180. Its totient is φ = 3822362688.

The previous prime is 8281785923. The next prime is 8281785991. The reversal of 8281785928 is 8295871828.

It can be written as a sum of positive squares in 2 ways, for example, as 7170363684 + 1111422244 = 84678^2 + 33338^2 .

It is not an unprimeable number, because it can be changed into a prime (8281785923) 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, 39816175 + ... + 39816382.

Almost surely, 2^8281785928 is an apocalyptic number.

It is an amenable number.

8281785928 is an abundant number, since it is smaller than the sum of its proper divisors (8441051252).

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

8281785928 is a wasteful number, since it uses less digits than its factorization.

8281785928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79632576 (or 79632572 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 58.

The square root of 8281785928 is about 91004.3181832599. The cubic root of 8281785928 is about 2023.2117263701.

The spelling of 8281785928 in words is "eight billion, two hundred eighty-one million, seven hundred eighty-five thousand, nine hundred twenty-eight".