2206218 has 16 divisors (see below), whose sum is σ = 5042880. Its totient is φ = 630336.

The previous prime is 2206207. The next prime is 2206219. The reversal of 2206218 is 8126022.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2206194 and 2206203.

It is not an unprimeable number, because it can be changed into a prime (2206219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26223 + ... + 26306.

It is an arithmetic number, because the mean of its divisors is an integer number (315180).

2^2206218 is an apocalyptic number.

2206218 is an abundant number, since it is smaller than the sum of its proper divisors (2836662).

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

2206218 is a wasteful number, since it uses less digits than its factorization.

2206218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52541.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 2206218 is about 1485.3343058046. The cubic root of 2206218 is about 130.1815609056.

The spelling of 2206218 in words is "two million, two hundred six thousand, two hundred eighteen".