850920 has 64 divisors (see below), whose sum is σ = 2920320. Its totient is φ = 194304.

The previous prime is 850897. The next prime is 850933. The reversal of 850920 is 29058.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 850920.

It is an unprimeable number.

850920 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 15 ways as a sum of consecutive naturals, for example, 334 + ... + 1346.

It is an arithmetic number, because the mean of its divisors is an integer number (45630).

2⁸⁵⁰⁹²⁰ 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 850920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1460160).

850920 is an abundant number, since it is smaller than the sum of its proper divisors (2069400).

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

850920 is a wasteful number, since it uses less digits than its factorization.

850920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 850920 is about 922.4532508480. The cubic root of 850920 is about 94.7609873479.

Adding to 850920 its reverse (29058), we get a palindrome (879978).

It can be divided in two parts, 850 and 920, that added together give a triangular number (1770 = T₅₉).

The spelling of 850920 in words is "eight hundred fifty thousand, nine hundred twenty".