822205830 has 32 divisors (see below), whose sum is σ = 1974057984. Its totient is φ = 219170016.

The previous prime is 822205819. The next prime is 822205831. The reversal of 822205830 is 38502228.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822205831) 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 15 ways as a sum of consecutive naturals, for example, 130329 + ... + 136491.

It is an arithmetic number, because the mean of its divisors is an integer number (61689312).

Almost surely, 2^822205830 is an apocalyptic number.

822205830 is an abundant number, since it is smaller than the sum of its proper divisors (1151852154).

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

822205830 is a wasteful number, since it uses less digits than its factorization.

822205830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10620.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 822205830 is about 28674.1317218150. The cubic root of 822205830 is about 936.8286934632.

The spelling of 822205830 in words is "eight hundred twenty-two million, two hundred five thousand, eight hundred thirty".