2857217816 has 16 divisors (see below), whose sum is σ = 5372211600. Its totient is φ = 1424628064.

The previous prime is 2857217809. The next prime is 2857217821. The reversal of 2857217816 is 6187127582.

2857217816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 494555 + ... + 500298.

It is an arithmetic number, because the mean of its divisors is an integer number (335763225).

Almost surely, 2^2857217816 is an apocalyptic number.

It is an amenable number.

2857217816 is a deficient number, since it is larger than the sum of its proper divisors (2514993784).

2857217816 is a wasteful number, since it uses less digits than its factorization.

2857217816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995218 (or 995214 counting only the distinct ones).

The product of its digits is 376320, while the sum is 47.

The square root of 2857217816 is about 53452.9495537898. The cubic root of 2857217816 is about 1418.9958211556.

The spelling of 2857217816 in words is "two billion, eight hundred fifty-seven million, two hundred seventeen thousand, eight hundred sixteen".