985800 has 96 divisors (see below), whose sum is σ = 3214080. Its totient is φ = 249600.

The previous prime is 985799. The next prime is 985807. The reversal of 985800 is 8589.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (985807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18574 + ... + 18626.

It is an arithmetic number, because the mean of its divisors is an integer number (33480).

2⁹⁸⁵⁸⁰⁰ 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 985800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1607040).

985800 is an abundant number, since it is smaller than the sum of its proper divisors (2228280).

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

985800 is a wasteful number, since it uses less digits than its factorization.

985800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 985800 is about 992.8746144403. The cubic root of 985800 is about 99.5244083785.

The spelling of 985800 in words is "nine hundred eighty-five thousand, eight hundred".