985140 has 72 divisors (see below), whose sum is σ = 3225768. Its totient is φ = 241920.

The previous prime is 985129. The next prime is 985151. The reversal of 985140 is 41589.

It is an interprime number because it is at equal distance from previous prime (985129) and next prime (985151).

It can be written as a sum of positive squares in 4 ways, for example, as 51984 + 933156 = 228^2 + 966^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 985140.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2130 + ... + 2550.

2⁹⁸⁵¹⁴⁰ is an apocalyptic number.

985140 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 985140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612884).

985140 is an abundant number, since it is smaller than the sum of its proper divisors (2240628).

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

985140 is a wasteful number, since it uses less digits than its factorization.

985140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 985140 is about 992.5421905390. The cubic root of 985140 is about 99.5021926573.

The spelling of 985140 in words is "nine hundred eighty-five thousand, one hundred forty".