2215206 has 24 divisors (see below), whose sum is σ = 5485584. Its totient is φ = 632880.

The previous prime is 2215201. The next prime is 2215211. The reversal of 2215206 is 6025122.

It is an interprime number because it is at equal distance from previous prime (2215201) and next prime (2215211).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8665 + ... + 8916.

It is an arithmetic number, because the mean of its divisors is an integer number (228566).

2^2215206 is an apocalyptic number.

2215206 is an abundant number, since it is smaller than the sum of its proper divisors (3270378).

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

2215206 is a wasteful number, since it uses less digits than its factorization.

2215206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17596 (or 17593 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2215206 is about 1488.3568120582. The cubic root of 2215206 is about 130.3581053392.

The spelling of 2215206 in words is "two million, two hundred fifteen thousand, two hundred six".