2218086 has 24 divisors (see below), whose sum is σ = 5176080. Its totient is φ = 682416.

The previous prime is 2218067. The next prime is 2218091. The reversal of 2218086 is 6808122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4506 + ... + 4973.

It is an arithmetic number, because the mean of its divisors is an integer number (215670).

2^2218086 is an apocalyptic number.

2218086 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2218086 is an abundant number, since it is smaller than the sum of its proper divisors (2957994).

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

2218086 is a wasteful number, since it uses less digits than its factorization.

2218086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9500 (or 9497 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 2218086 is about 1489.3240077297. The cubic root of 2218086 is about 130.4145739416.

The spelling of 2218086 in words is "two million, two hundred eighteen thousand, eighty-six".