822772728 has 56 divisors (see below), whose sum is σ = 2313006600. Its totient is φ = 274255632.

The previous prime is 822772723. The next prime is 822772739. The reversal of 822772728 is 827277228.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822772723) by changing a digit.

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 13 ways as a sum of consecutive naturals, for example, 64708 + ... + 76371.

Almost surely, 2^822772728 is an apocalyptic number.

It is an amenable number.

822772728 is an abundant number, since it is smaller than the sum of its proper divisors (1490233872).

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

822772728 is a wasteful number, since it uses less digits than its factorization.

822772728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141103 (or 141084 counting only the distinct ones).

The product of its digits is 351232, while the sum is 45.

The square root of 822772728 is about 28684.0152001075. The cubic root of 822772728 is about 937.0439535524.

The spelling of 822772728 in words is "eight hundred twenty-two million, seven hundred seventy-two thousand, seven hundred twenty-eight".