984820 has 24 divisors (see below), whose sum is σ = 2120328. Its totient is φ = 384000.

The previous prime is 984817. The next prime is 984847. The reversal of 984820 is 28489.

It can be written as a sum of positive squares in 4 ways, for example, as 104976 + 879844 = 324^2 + 938^2 .

It is a congruent number.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 220 + ... + 1420.

It is an arithmetic number, because the mean of its divisors is an integer number (88347).

2⁹⁸⁴⁸²⁰ 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 984820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1060164).

984820 is an abundant number, since it is smaller than the sum of its proper divisors (1135508).

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

984820 is a wasteful number, since it uses less digits than its factorization.

984820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251 (or 1249 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 984820 is about 992.3809752308. The cubic root of 984820 is about 99.4914178267.

The spelling of 984820 in words is "nine hundred eighty-four thousand, eight hundred twenty".