985520 has 40 divisors (see below), whose sum is σ = 2333184. Its totient is φ = 387072.

The previous prime is 985519. The next prime is 985529. The reversal of 985520 is 25589.

It is a tau number, because it is divible by the number of its divisors (40).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (985529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7697 + ... + 7823.

2⁹⁸⁵⁵²⁰ 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 985520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1166592).

985520 is an abundant number, since it is smaller than the sum of its proper divisors (1347664).

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

985520 is a wasteful number, since it uses less digits than its factorization.

985520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 985520 is about 992.7335997134. The cubic root of 985520 is about 99.5149847385.

The spelling of 985520 in words is "nine hundred eighty-five thousand, five hundred twenty".