8257842712 has 32 divisors (see below), whose sum is σ = 17702082720. Its totient is φ = 3537734400.

The previous prime is 8257842647. The next prime is 8257842721. The reversal of 8257842712 is 2172487528.

It is a happy number.

It is a super-2 number, since 2×8257842712² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128962 + ... + 182062.

It is an arithmetic number, because the mean of its divisors is an integer number (553190085).

Almost surely, 2^8257842712 is an apocalyptic number.

It is an amenable number.

8257842712 is an abundant number, since it is smaller than the sum of its proper divisors (9444240008).

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

8257842712 is a wasteful number, since it uses less digits than its factorization.

8257842712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55891 (or 55887 counting only the distinct ones).

The product of its digits is 501760, while the sum is 46.

The square root of 8257842712 is about 90872.6730761234. The cubic root of 8257842712 is about 2021.2600960426.

The spelling of 8257842712 in words is "eight billion, two hundred fifty-seven million, eight hundred forty-two thousand, seven hundred twelve".