820208222 has 8 divisors (see below), whose sum is σ = 1230647256. Its totient is φ = 409992472.

The previous prime is 820208219. The next prime is 820208237. The reversal of 820208222 is 222802028.

820208222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 820208191 and 820208200.

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, 46313 + ... + 61524.

It is an arithmetic number, because the mean of its divisors is an integer number (153830907).

Almost surely, 2^820208222 is an apocalyptic number.

820208222 is a deficient number, since it is larger than the sum of its proper divisors (410439034).

820208222 is a wasteful number, since it uses less digits than its factorization.

820208222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111642.

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 820208222 is about 28639.2776096046. The cubic root of 820208222 is about 936.0693807082.

The spelling of 820208222 in words is "eight hundred twenty million, two hundred eight thousand, two hundred twenty-two".