857803056 has 40 divisors (see below), whose sum is σ = 2417446464. Its totient is φ = 259940160.

The previous prime is 857803049. The next prime is 857803073. The reversal of 857803056 is 650308758.

It is a junction number, because it is equal to n+sod(n) for n = 857802999 and 857803017.

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, 811786 + ... + 812841.

Almost surely, 2^857803056 is an apocalyptic number.

It is an amenable number.

857803056 is an abundant number, since it is smaller than the sum of its proper divisors (1559643408).

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

857803056 is a wasteful number, since it uses less digits than its factorization.

857803056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624649 (or 1624643 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 857803056 is about 29288.2750601670. The cubic root of 857803056 is about 950.1580737884.

The spelling of 857803056 in words is "eight hundred fifty-seven million, eight hundred three thousand, fifty-six".