7218008 has 32 divisors (see below), whose sum is σ = 15728160. Its totient is φ = 3041280.

The previous prime is 7217963. The next prime is 7218019. The reversal of 7218008 is 8008127.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2360 + ... + 4472.

It is an arithmetic number, because the mean of its divisors is an integer number (491505).

Almost surely, 2^7218008 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 7218008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7864080).

7218008 is an abundant number, since it is smaller than the sum of its proper divisors (8510152).

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

7218008 is a wasteful number, since it uses less digits than its factorization.

7218008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187 (or 2183 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 7218008 is about 2686.6350701202. The cubic root of 7218008 is about 193.2587293075.

The spelling of 7218008 in words is "seven million, two hundred eighteen thousand, eight".