8251218 has 12 divisors (see below), whose sum is σ = 17877678. Its totient is φ = 2750400.

The previous prime is 8251207. The next prime is 8251219. The reversal of 8251218 is 8121528.

It can be written as a sum of positive squares in only one way, i.e., 5919489 + 2331729 = 2433^2 + 1527^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8251191 and 8251200.

It is not an unprimeable number, because it can be changed into a prime (8251219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 229183 + ... + 229218.

Almost surely, 2^8251218 is an apocalyptic number.

8251218 is an abundant number, since it is smaller than the sum of its proper divisors (9626460).

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

8251218 is a wasteful number, since it uses less digits than its factorization.

8251218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458409 (or 458406 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 8251218 is about 2872.4933420288. The cubic root of 8251218 is about 202.0719444415.

The spelling of 8251218 in words is "eight million, two hundred fifty-one thousand, two hundred eighteen".