985530 has 96 divisors (see below), whose sum is σ = 3072384. Its totient is φ = 196992.

The previous prime is 985529. The next prime is 985531. The reversal of 985530 is 35589.

It is an interprime number because it is at equal distance from previous prime (985529) and next prime (985531).

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

It is an Ulam number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985531) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 51861 + ... + 51879.

It is an arithmetic number, because the mean of its divisors is an integer number (32004).

2⁹⁸⁵⁵³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 985530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1536192).

985530 is an abundant number, since it is smaller than the sum of its proper divisors (2086854).

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

985530 is a wasteful number, since it uses less digits than its factorization.

985530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 985530 is about 992.7386362986. The cubic root of 985530 is about 99.5153213278.

The spelling of 985530 in words is "nine hundred eighty-five thousand, five hundred thirty".