857456 has 10 divisors (see below), whose sum is σ = 1661352. Its totient is φ = 428720.

The previous prime is 857453. The next prime is 857459. The reversal of 857456 is 654758.

It is an interprime number because it is at equal distance from previous prime (857453) and next prime (857459).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26780 + ... + 26811.

2⁸⁵⁷⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

857456 is a deficient number, since it is larger than the sum of its proper divisors (803896).

857456 is a wasteful number, since it uses less digits than its factorization.

857456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53599 (or 53593 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 857456 is about 925.9892008010. The cubic root of 857456 is about 95.0029915955.

The spelling of 857456 in words is "eight hundred fifty-seven thousand, four hundred fifty-six".