844120 has 32 divisors (see below), whose sum is σ = 1944000. Its totient is φ = 329728.

The previous prime is 844117. The next prime is 844121. The reversal of 844120 is 21448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844121) 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, 1656 + ... + 2104.

It is an arithmetic number, because the mean of its divisors is an integer number (60750).

2⁸⁴⁴¹²⁰ 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 844120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (972000).

844120 is an abundant number, since it is smaller than the sum of its proper divisors (1099880).

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

844120 is a wasteful number, since it uses less digits than its factorization.

844120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 844120 is about 918.7600339588. The cubic root of 844120 is about 94.5078891914.

Adding to 844120 its reverse (21448), we get a palindrome (865568).

The spelling of 844120 in words is "eight hundred forty-four thousand, one hundred twenty".