852820 has 12 divisors (see below), whose sum is σ = 1790964. Its totient is φ = 341120.

The previous prime is 852809. The next prime is 852827. The reversal of 852820 is 28258.

It can be written as a sum of positive squares in 2 ways, for example, as 427716 + 425104 = 654^2 + 652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (852827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21301 + ... + 21340.

It is an arithmetic number, because the mean of its divisors is an integer number (149247).

2⁸⁵²⁸²⁰ is an apocalyptic number.

It is an amenable number.

852820 is an abundant number, since it is smaller than the sum of its proper divisors (938144).

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

852820 is a wasteful number, since it uses less digits than its factorization.

852820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42650 (or 42648 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 852820 is about 923.4825390878. The cubic root of 852820 is about 94.8314648057.

The spelling of 852820 in words is "eight hundred fifty-two thousand, eight hundred twenty".