822128 has 10 divisors (see below), whose sum is σ = 1592904. Its totient is φ = 411056.

The previous prime is 822113. The next prime is 822131. The reversal of 822128 is 821228.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25676 + ... + 25707.

2⁸²²¹²⁸ is an apocalyptic number.

It is an amenable number.

822128 is a deficient number, since it is larger than the sum of its proper divisors (770776).

822128 is a wasteful number, since it uses less digits than its factorization.

822128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51391 (or 51385 counting only the distinct ones).

The product of its digits is 512, while the sum is 23.

The square root of 822128 is about 906.7127439272. The cubic root of 822128 is about 93.6799132464.

Subtracting from 822128 its reverse (821228), we obtain a square (900 = 30²).

The spelling of 822128 in words is "eight hundred twenty-two thousand, one hundred twenty-eight".