820844322 has 8 divisors (see below), whose sum is σ = 1641688656. Its totient is φ = 273614772.

The previous prime is 820844293. The next prime is 820844363. The reversal of 820844322 is 223448028.

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

820844322 is an admirable 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, 68403688 + ... + 68403699.

It is an arithmetic number, because the mean of its divisors is an integer number (205211082).

Almost surely, 2^820844322 is an apocalyptic number.

820844322 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

820844322 is a wasteful number, since it uses less digits than its factorization.

820844322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136807392.

The product of its (nonzero) digits is 24576, while the sum is 33.

The square root of 820844322 is about 28650.3808351652. The cubic root of 820844322 is about 936.3113029652.

The spelling of 820844322 in words is "eight hundred twenty million, eight hundred forty-four thousand, three hundred twenty-two".