857156 has 12 divisors (see below), whose sum is σ = 1506540. Its totient is φ = 426720.

The previous prime is 857137. The next prime is 857161. The reversal of 857156 is 651758.

It can be written as a sum of positive squares in 2 ways, for example, as 270400 + 586756 = 520^2 + 766^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1430 + ... + 1938.

It is an arithmetic number, because the mean of its divisors is an integer number (125545).

2⁸⁵⁷¹⁵⁶ is an apocalyptic number.

It is an amenable number.

857156 is a deficient number, since it is larger than the sum of its proper divisors (649384).

857156 is a wasteful number, since it uses less digits than its factorization.

857156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934 (or 932 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The square root of 857156 is about 925.8271976994. The cubic root of 857156 is about 94.9919106685.

The spelling of 857156 in words is "eight hundred fifty-seven thousand, one hundred fifty-six".