2212806 has 8 divisors (see below), whose sum is σ = 4425624. Its totient is φ = 737600.

The previous prime is 2212783. The next prime is 2212817. The reversal of 2212806 is 6082122.

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

2212806 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184395 + ... + 184406.

It is an arithmetic number, because the mean of its divisors is an integer number (553203).

2^2212806 is an apocalyptic number.

2212806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2212806 is a wasteful number, since it uses less digits than its factorization.

2212806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368806.

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

The square root of 2212806 is about 1487.5503352828. The cubic root of 2212806 is about 130.3110107715.

Adding to 2212806 its reverse (6082122), we get a palindrome (8294928).

The spelling of 2212806 in words is "two million, two hundred twelve thousand, eight hundred six".