857400 has 48 divisors (see below), whose sum is σ = 2659800. Its totient is φ = 228480.

The previous prime is 857369. The next prime is 857407. The reversal of 857400 is 4758.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115 + ... + 1314.

2⁸⁵⁷⁴⁰⁰ 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 857400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1329900).

857400 is an abundant number, since it is smaller than the sum of its proper divisors (1802400).

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

857400 is a wasteful number, since it uses less digits than its factorization.

857400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 857400 is about 925.9589623736. The cubic root of 857400 is about 95.0009233521. Note that the first 3 decimals are identical.

The spelling of 857400 in words is "eight hundred fifty-seven thousand, four hundred".