222628806 has 48 divisors (see below), whose sum is σ = 491871744. Its totient is φ = 72757872.

The previous prime is 222628793. The next prime is 222628817. The reversal of 222628806 is 608826222.

222628806 is a `hidden beast` number, since 2 + 22 + 628 + 8 + 0 + 6 = 666.

222628806 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 442351 + ... + 442853.

It is an arithmetic number, because the mean of its divisors is an integer number (10247328).

Almost surely, 2^222628806 is an apocalyptic number.

222628806 is an abundant number, since it is smaller than the sum of its proper divisors (269242938).

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

222628806 is a wasteful number, since it uses less digits than its factorization.

222628806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 222628806 is about 14920.7508524203. The cubic root of 222628806 is about 606.0760450921.

The spelling of 222628806 in words is "two hundred twenty-two million, six hundred twenty-eight thousand, eight hundred six".