857158856 has 32 divisors (see below), whose sum is σ = 1703160000. Its totient is φ = 403286976.

The previous prime is 857158823. The next prime is 857158859. The reversal of 857158856 is 658851758.

It is a junction number, because it is equal to n+sod(n) for n = 857158798 and 857158807.

It is not an unprimeable number, because it can be changed into a prime (857158859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3725 + ... + 41571.

It is an arithmetic number, because the mean of its divisors is an integer number (53223750).

Almost surely, 2^857158856 is an apocalyptic number.

It is an amenable number.

857158856 is a deficient number, since it is larger than the sum of its proper divisors (846001144).

857158856 is a wasteful number, since it uses less digits than its factorization.

857158856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38021 (or 38017 counting only the distinct ones).

The product of its digits is 2688000, while the sum is 53.

The square root of 857158856 is about 29277.2754196834. The cubic root of 857158856 is about 949.9201617116.

The spelling of 857158856 in words is "eight hundred fifty-seven million, one hundred fifty-eight thousand, eight hundred fifty-six".