857883136 has 80 divisors (see below), whose sum is σ = 1968579360. Its totient is φ = 369377280.

The previous prime is 857883113. The next prime is 857883137. The reversal of 857883136 is 631388758.

It is a self number, because there is not a number n which added to its sum of digits gives 857883136.

It is not an unprimeable number, because it can be changed into a prime (857883137) 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, 103000 + ... + 111016.

It is an arithmetic number, because the mean of its divisors is an integer number (24607242).

Almost surely, 2^857883136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 857883136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984289680).

857883136 is an abundant number, since it is smaller than the sum of its proper divisors (1110696224).

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

857883136 is a wasteful number, since it uses less digits than its factorization.

857883136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8065 (or 8049 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The square root of 857883136 is about 29289.6421282337. The cubic root of 857883136 is about 950.1876401286.

The spelling of 857883136 in words is "eight hundred fifty-seven million, eight hundred eighty-three thousand, one hundred thirty-six".