857328 has 40 divisors (see below), whose sum is σ = 2263248. Its totient is φ = 279552.

The previous prime is 857321. The next prime is 857333. The reversal of 857328 is 823758.

It is a super-2 number, since 2×857328² = 1470022599168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857321) 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, 2376 + ... + 2712.

2⁸⁵⁷³²⁸ 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 857328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1131624).

857328 is an abundant number, since it is smaller than the sum of its proper divisors (1405920).

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

857328 is a wasteful number, since it uses less digits than its factorization.

857328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 395 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 857328 is about 925.9200829445. The cubic root of 857328 is about 94.9982640495.

The spelling of 857328 in words is "eight hundred fifty-seven thousand, three hundred twenty-eight".