850128 has 40 divisors (see below), whose sum is σ = 2232000. Its totient is φ = 278784.

The previous prime is 850121. The next prime is 850133. The reversal of 850128 is 821058.

850128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 850098 and 850107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850121) 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, 4173 + ... + 4371.

It is an arithmetic number, because the mean of its divisors is an integer number (55800).

2⁸⁵⁰¹²⁸ 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 850128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1116000).

850128 is an abundant number, since it is smaller than the sum of its proper divisors (1381872).

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

850128 is a wasteful number, since it uses less digits than its factorization.

850128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 850128 is about 922.0238608626. The cubic root of 850128 is about 94.7315783950.

The spelling of 850128 in words is "eight hundred fifty thousand, one hundred twenty-eight".