285122939328 has 280 divisors, whose sum is σ = 896911551360. Its totient is φ = 89365731840.

The previous prime is 285122939327. The next prime is 285122939369. The reversal of 285122939328 is 823939221582.

285122939328 is a `hidden beast` number, since 2 + 8 + 5 + 1 + 229 + 393 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285122939323) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7014423 + ... + 7054953.

Almost surely, 2^285122939328 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 285122939328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448455775680).

285122939328 is an abundant number, since it is smaller than the sum of its proper divisors (611788612032).

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

285122939328 is a wasteful number, since it uses less digits than its factorization.

285122939328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40637 (or 40618 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 285122939328 in words is "two hundred eighty-five billion, one hundred twenty-two million, nine hundred thirty-nine thousand, three hundred twenty-eight".