855228 has 72 divisors (see below), whose sum is σ = 2383360. Its totient is φ = 237600.

The previous prime is 855221. The next prime is 855229. The reversal of 855228 is 822558.

855228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 855195 and 855204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27573 + ... + 27603.

2⁸⁵⁵²²⁸ 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 855228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1191680).

855228 is an abundant number, since it is smaller than the sum of its proper divisors (1528132).

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

855228 is a wasteful number, since it uses less digits than its factorization.

855228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 66 counting only the distinct ones).

The product of its digits is 6400, while the sum is 30.

The square root of 855228 is about 924.7853805073. The cubic root of 855228 is about 94.9206354704.

The spelling of 855228 in words is "eight hundred fifty-five thousand, two hundred twenty-eight".