851130 has 72 divisors (see below), whose sum is σ = 2587572. Its totient is φ = 193536.

The previous prime is 851117. The next prime is 851131. The reversal of 851130 is 31158.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 815409 + 35721 = 903^2 + 189^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (851131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4314 + ... + 4506.

2⁸⁵¹¹³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1293786).

851130 is an abundant number, since it is smaller than the sum of its proper divisors (1736442).

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

851130 is a wasteful number, since it uses less digits than its factorization.

851130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 851130 is about 922.5670707325. The cubic root of 851130 is about 94.7687821154.

Adding to 851130 its reverse (31158), we get a palindrome (882288).

The spelling of 851130 in words is "eight hundred fifty-one thousand, one hundred thirty".