985220 has 12 divisors (see below), whose sum is σ = 2069004. Its totient is φ = 394080.

The previous prime is 985219. The next prime is 985253. The reversal of 985220 is 22589.

It can be written as a sum of positive squares in 2 ways, for example, as 322624 + 662596 = 568^2 + 814^2 .

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 985220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24611 + ... + 24650.

It is an arithmetic number, because the mean of its divisors is an integer number (172417).

2⁹⁸⁵²²⁰ is an apocalyptic number.

It is an amenable number.

985220 is an abundant number, since it is smaller than the sum of its proper divisors (1083784).

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

985220 is a wasteful number, since it uses less digits than its factorization.

985220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49270 (or 49268 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 985220 is about 992.5824902747. The cubic root of 985220 is about 99.5048860003.

The spelling of 985220 in words is "nine hundred eighty-five thousand, two hundred twenty".