9872118 has 64 divisors (see below), whose sum is σ = 23183040. Its totient is φ = 3149280.

The previous prime is 9872117. The next prime is 9872123. The reversal of 9872118 is 8112789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9872111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161808 + ... + 161868.

It is an arithmetic number, because the mean of its divisors is an integer number (362235).

Almost surely, 2^9872118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9872118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11591520).

9872118 is an abundant number, since it is smaller than the sum of its proper divisors (13310922).

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

9872118 is an equidigital number, since it uses as much as digits as its factorization.

9872118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 103 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 9872118 is about 3141.9926798132. The cubic root of 9872118 is about 214.5211480934.

The spelling of 9872118 in words is "nine million, eight hundred seventy-two thousand, one hundred eighteen".