16845218 has 8 divisors (see below), whose sum is σ = 27211548. Its totient is φ = 7774704.

The previous prime is 16845193. The next prime is 16845251. The reversal of 16845218 is 81254861.

It can be written as a sum of positive squares in 2 ways, for example, as 16834609 + 10609 = 4103^2 + 103^2 .

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

It is a super-2 number, since 2×16845218² = 567522738935048, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323921 + ... + 323972.

Almost surely, 2^16845218 is an apocalyptic number.

16845218 is a deficient number, since it is larger than the sum of its proper divisors (10366330).

16845218 is a wasteful number, since it uses less digits than its factorization.

16845218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647908.

The product of its digits is 15360, while the sum is 35.

The square root of 16845218 is about 4104.2926308927. The cubic root of 16845218 is about 256.3454098017.

The spelling of 16845218 in words is "sixteen million, eight hundred forty-five thousand, two hundred eighteen".