7957218 has 32 divisors (see below), whose sum is σ = 16790400. Its totient is φ = 2513808.

The previous prime is 7957217. The next prime is 7957237. The reversal of 7957218 is 8127597.

It is not an unprimeable number, because it can be changed into a prime (7957211) 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 15 ways as a sum of consecutive naturals, for example, 72948 + ... + 73056.

It is an arithmetic number, because the mean of its divisors is an integer number (524700).

Almost surely, 2^7957218 is an apocalyptic number.

7957218 is an abundant number, since it is smaller than the sum of its proper divisors (8833182).

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

7957218 is a wasteful number, since it uses less digits than its factorization.

7957218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 137 counting only the distinct ones).

The product of its digits is 35280, while the sum is 39.

The square root of 7957218 is about 2820.8541259697. The cubic root of 7957218 is about 199.6428459178.

The spelling of 7957218 in words is "seven million, nine hundred fifty-seven thousand, two hundred eighteen".