8407218 has 8 divisors (see below), whose sum is σ = 16814448. Its totient is φ = 2802404.

The previous prime is 8407211. The next prime is 8407229. The reversal of 8407218 is 8127048.

It is a sphenic number, since it is the product of 3 distinct primes.

8407218 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8407211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700596 + ... + 700607.

It is an arithmetic number, because the mean of its divisors is an integer number (2101806).

Almost surely, 2^8407218 is an apocalyptic number.

8407218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8407218 is a wasteful number, since it uses less digits than its factorization.

8407218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401208.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 8407218 is about 2899.5203051539. The cubic root of 8407218 is about 203.3374796849.

The spelling of 8407218 in words is "eight million, four hundred seven thousand, two hundred eighteen".