9861320 has 64 divisors (see below), whose sum is σ = 26006400. Its totient is φ = 3294720.

The previous prime is 9861307. The next prime is 9861349. The reversal of 9861320 is 231689.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11051 + ... + 11909.

It is an arithmetic number, because the mean of its divisors is an integer number (406350).

Almost surely, 2^9861320 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 9861320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13003200).

9861320 is an abundant number, since it is smaller than the sum of its proper divisors (16145080).

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

9861320 is a wasteful number, since it uses less digits than its factorization.

9861320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 9861320 is about 3140.2738734066. The cubic root of 9861320 is about 214.4429060376.

The spelling of 9861320 in words is "nine million, eight hundred sixty-one thousand, three hundred twenty".