857807652 has 24 divisors (see below), whose sum is σ = 2155517056. Its totient is φ = 263940768.

The previous prime is 857807627. The next prime is 857807683. The reversal of 857807652 is 256708758.

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, 2749228 + ... + 2749539.

Almost surely, 2^857807652 is an apocalyptic number.

It is an amenable number.

857807652 is an abundant number, since it is smaller than the sum of its proper divisors (1297709404).

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

857807652 is a wasteful number, since it uses less digits than its factorization.

857807652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498787 (or 5498785 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The square root of 857807652 is about 29288.3535214938. The cubic root of 857807652 is about 950.1597707276.

The spelling of 857807652 in words is "eight hundred fifty-seven million, eight hundred seven thousand, six hundred fifty-two".