852117894 has 112 divisors (see below), whose sum is σ = 2096461440. Its totient is φ = 258474240.

The previous prime is 852117887. The next prime is 852117983. The reversal of 852117894 is 498711258.

It is a super-2 number, since 2×852117894² = 1452209810549990472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 767812 + ... + 768920.

Almost surely, 2^852117894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 852117894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048230720).

852117894 is an abundant number, since it is smaller than the sum of its proper divisors (1244343546).

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

852117894 is a wasteful number, since it uses less digits than its factorization.

852117894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177 (or 1162 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 852117894 is about 29191.0584597407. The cubic root of 852117894 is about 948.0543351328.

The spelling of 852117894 in words is "eight hundred fifty-two million, one hundred seventeen thousand, eight hundred ninety-four".