285979538952 has 80 divisors (see below), whose sum is σ = 803534919660. Its totient is φ = 95025730176.

The previous prime is 285979538951. The next prime is 285979539019. The reversal of 285979538952 is 259835979582.

285979538952 is a `hidden beast` number, since 2 + 85 + 9 + 7 + 9 + 538 + 9 + 5 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 210895866756 + 75083672196 = 459234^2 + 274014^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (285979538951) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 490683 + ... + 901514.

Almost surely, 2^285979538952 is an apocalyptic number.

It is an amenable number.

285979538952 is an abundant number, since it is smaller than the sum of its proper divisors (517555380708).

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

285979538952 is a wasteful number, since it uses less digits than its factorization.

285979538952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392532 (or 1392519 counting only the distinct ones).

The product of its digits is 489888000, while the sum is 72.

The spelling of 285979538952 in words is "two hundred eighty-five billion, nine hundred seventy-nine million, five hundred thirty-eight thousand, nine hundred fifty-two".