820334868 has 48 divisors (see below), whose sum is σ = 1950419520. Its totient is φ = 268291584.

The previous prime is 820334863. The next prime is 820334869. The reversal of 820334868 is 868433028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820334863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214380 + ... + 218172.

It is an arithmetic number, because the mean of its divisors is an integer number (40633740).

Almost surely, 2^820334868 is an apocalyptic number.

It is an amenable number.

820334868 is an abundant number, since it is smaller than the sum of its proper divisors (1130084652).

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

820334868 is a wasteful number, since it uses less digits than its factorization.

820334868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136 (or 4134 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 820334868 is about 28641.4885786336. The cubic root of 820334868 is about 936.1175568252.

It can be divided in two parts, 8203 and 34868, that added together give a triangular number (43071 = T₂₉₃).

The spelling of 820334868 in words is "eight hundred twenty million, three hundred thirty-four thousand, eight hundred sixty-eight".