9218412 has 72 divisors (see below), whose sum is σ = 26915616. Its totient is φ = 2605824.

The previous prime is 9218393. The next prime is 9218441. The reversal of 9218412 is 2148129.

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 23 ways as a sum of consecutive naturals, for example, 39448 + ... + 39680.

It is an arithmetic number, because the mean of its divisors is an integer number (373828).

Almost surely, 2^9218412 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 9218412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13457808).

9218412 is an abundant number, since it is smaller than the sum of its proper divisors (17697204).

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

9218412 is a wasteful number, since it uses less digits than its factorization.

9218412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 402 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 9218412 is about 3036.1837889034. The cubic root of 9218412 is about 209.6776005323.

The spelling of 9218412 in words is "nine million, two hundred eighteen thousand, four hundred twelve".