8273218 has 8 divisors (see below), whose sum is σ = 12810240. Its totient is φ = 4003140.

The previous prime is 8273197. The next prime is 8273231. The reversal of 8273218 is 8123728.

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

It is a super-2 number, since 2×8273218² = 136892272151048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8273218.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 66658 + ... + 66781.

It is an arithmetic number, because the mean of its divisors is an integer number (1601280).

Almost surely, 2^8273218 is an apocalyptic number.

8273218 is a deficient number, since it is larger than the sum of its proper divisors (4537022).

8273218 is a wasteful number, since it uses less digits than its factorization.

8273218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133472.

The product of its digits is 5376, while the sum is 31.

The square root of 8273218 is about 2876.3202186127. The cubic root of 8273218 is about 202.2513780546.

The spelling of 8273218 in words is "eight million, two hundred seventy-three thousand, two hundred eighteen".