857888 has 48 divisors (see below), whose sum is σ = 1905120. Its totient is φ = 377856.

The previous prime is 857873. The next prime is 857897. The reversal of 857888 is 888758.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 857888.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10295 + ... + 10377.

It is an arithmetic number, because the mean of its divisors is an integer number (39690).

2⁸⁵⁷⁸⁸⁸ 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 857888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (952560).

857888 is an abundant number, since it is smaller than the sum of its proper divisors (1047232).

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

857888 is a wasteful number, since it uses less digits than its factorization.

857888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 121 counting only the distinct ones).

The product of its digits is 143360, while the sum is 44.

The square root of 857888 is about 926.2224354873. Note that the first 3 decimals coincide. The cubic root of 857888 is about 95.0189435907.

The spelling of 857888 in words is "eight hundred fifty-seven thousand, eight hundred eighty-eight".