944820 has 72 divisors (see below), whose sum is σ = 2981160. Its totient is φ = 241920.

The previous prime is 944803. The next prime is 944821. The reversal of 944820 is 28449.

It can be written as a sum of positive squares in 4 ways, for example, as 36 + 944784 = 6^2 + 972^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 944820.

It is not an unprimeable number, because it can be changed into a prime (944821) by changing a digit.

944820 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 (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5130 + ... + 5310.

It is an arithmetic number, because the mean of its divisors is an integer number (41405).

2⁹⁴⁴⁸²⁰ is an apocalyptic number.

944820 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 944820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1490580).

944820 is an abundant number, since it is smaller than the sum of its proper divisors (2036340).

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

944820 is a wasteful number, since it uses less digits than its factorization.

944820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 944820 is about 972.0185183421. The cubic root of 944820 is about 98.1257583075.

It can be divided in two parts, 944 and 820, that added together give a square (1764 = 42²).

The spelling of 944820 in words is "nine hundred forty-four thousand, eight hundred twenty".