9873216 has 84 divisors (see below), whose sum is σ = 28866084. Its totient is φ = 3225600.

The previous prime is 9873181. The next prime is 9873223. The reversal of 9873216 is 6123789.

It can be written as a sum of positive squares in 2 ways, for example, as 2903616 + 6969600 = 1704^2 + 2640^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34996 + ... + 35276.

Almost surely, 2^9873216 is an apocalyptic number.

9873216 is a gapful number since it is divisible by the number (96) 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 9873216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14433042).

9873216 is an abundant number, since it is smaller than the sum of its proper divisors (18992868).

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

9873216 is a wasteful number, since it uses less digits than its factorization.

9873216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 347 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 9873216 is about 3142.1674048338. The cubic root of 9873216 is about 214.5291009794.

The spelling of 9873216 in words is "nine million, eight hundred seventy-three thousand, two hundred sixteen".