8258218 has 4 divisors (see below), whose sum is σ = 12387330. Its totient is φ = 4129108.

The previous prime is 8258213. The next prime is 8258227. The reversal of 8258218 is 8128528.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6017209 + 2241009 = 2453^2 + 1497^2 .

It is not an unprimeable number, because it can be changed into a prime (8258213) by changing a digit.

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 as a sum of consecutive naturals, namely, 2064553 + ... + 2064556.

Almost surely, 2^8258218 is an apocalyptic number.

8258218 is a deficient number, since it is larger than the sum of its proper divisors (4129112).

8258218 is a wasteful number, since it uses less digits than its factorization.

8258218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4129111.

The product of its digits is 10240, while the sum is 34.

The square root of 8258218 is about 2873.7115373677. The cubic root of 8258218 is about 202.1290715144.

The spelling of 8258218 in words is "eight million, two hundred fifty-eight thousand, two hundred eighteen".