285820798284 has 192 divisors, whose sum is σ = 893961600000. Its totient is φ = 78846820416.

The previous prime is 285820798279. The next prime is 285820798327. The reversal of 285820798284 is 482897028582.

285820798284 is a `hidden beast` number, since 28 + 582 + 0 + 7 + 9 + 8 + 28 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 941247 + ... + 1207305.

It is an arithmetic number, because the mean of its divisors is an integer number (4656050000).

Almost surely, 2^285820798284 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285820798284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446980800000).

285820798284 is an abundant number, since it is smaller than the sum of its proper divisors (608140801716).

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

285820798284 is a wasteful number, since it uses less digits than its factorization.

285820798284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266122 (or 266100 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 63.

The spelling of 285820798284 in words is "two hundred eighty-five billion, eight hundred twenty million, seven hundred ninety-eight thousand, two hundred eighty-four".