820842882 has 8 divisors (see below), whose sum is σ = 1641685776. Its totient is φ = 273614292.

The previous prime is 820842877. The next prime is 820842887. The reversal of 820842882 is 288248028.

It is an interprime number because it is at equal distance from previous prime (820842877) and next prime (820842887).

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

820842882 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (820842887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68403568 + ... + 68403579.

It is an arithmetic number, because the mean of its divisors is an integer number (205210722).

Almost surely, 2^820842882 is an apocalyptic number.

820842882 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.

820842882 is a wasteful number, since it uses less digits than its factorization.

820842882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136807152.

The product of its (nonzero) digits is 131072, while the sum is 42.

The square root of 820842882 is about 28650.3557045982. The cubic root of 820842882 is about 936.3107554440.

The spelling of 820842882 in words is "eight hundred twenty million, eight hundred forty-two thousand, eight hundred eighty-two".