822404228 has 12 divisors (see below), whose sum is σ = 1443007440. Its totient is φ = 410116392.

The previous prime is 822404207. The next prime is 822404251.

It is a happy number.

822404228 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 822404194 and 822404203.

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, 269726 + ... + 272757.

It is an arithmetic number, because the mean of its divisors is an integer number (120250620).

Almost surely, 2^822404228 is an apocalyptic number.

It is an amenable number.

822404228 is a deficient number, since it is larger than the sum of its proper divisors (620603212).

822404228 is a wasteful number, since it uses less digits than its factorization.

822404228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542866 (or 542864 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 822404228 is about 28677.5910424847. The cubic root of 822404228 is about 936.9040395565.

It can be divided in two parts, 82240 and 4228, that added together give a palindrome (86468).

The spelling of 822404228 in words is "eight hundred twenty-two million, four hundred four thousand, two hundred twenty-eight".