857834 has 8 divisors (see below), whose sum is σ = 1293060. Its totient is φ = 426816.

The previous prime is 857827. The next prime is 857839. The reversal of 857834 is 438758.

It can be written as a sum of positive squares in 2 ways, for example, as 855625 + 2209 = 925^2 + 47^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 857794 and 857803.

It is not an unprimeable number, because it can be changed into a prime (857839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479 + ... + 1394.

2⁸⁵⁷⁸³⁴ is an apocalyptic number.

857834 is a deficient number, since it is larger than the sum of its proper divisors (435226).

857834 is a wasteful number, since it uses less digits than its factorization.

857834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104.

The product of its digits is 26880, while the sum is 35.

The square root of 857834 is about 926.1932843635. The cubic root of 857834 is about 95.0169498842.

The spelling of 857834 in words is "eight hundred fifty-seven thousand, eight hundred thirty-four".