9918700 has 72 divisors (see below), whose sum is σ = 23998464. Its totient is φ = 3528000.

The previous prime is 9918697. The next prime is 9918707. The reversal of 9918700 is 78199.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (9918707) 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 23 ways as a sum of consecutive naturals, for example, 78037 + ... + 78163.

It is an arithmetic number, because the mean of its divisors is an integer number (333312).

Almost surely, 2^9918700 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 9918700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11999232).

9918700 is an abundant number, since it is smaller than the sum of its proper divisors (14079764).

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

9918700 is a wasteful number, since it uses less digits than its factorization.

9918700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 9918700 is about 3149.3967676366. The cubic root of 9918700 is about 214.8580277784.

The spelling of 9918700 in words is "nine million, nine hundred eighteen thousand, seven hundred".