285229981472 has 54 divisors (see below), whose sum is σ = 592776431793. Its totient is φ = 135081748224.

The previous prime is 285229981459. The next prime is 285229981507. The reversal of 285229981472 is 274189922582.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 257044944016 + 28185037456 = 506996^2 + 167884^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=377644.

It is a super-2 number, since 2×285229981472² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 57399404 + ... + 57404372.

Almost surely, 2^285229981472 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 285229981472

285229981472 is an abundant number, since it is smaller than the sum of its proper divisors (307546450321).

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

285229981472 is an frugal number, since it uses more digits than its factorization.

285229981472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9986 (or 4990 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 59.

The spelling of 285229981472 in words is "two hundred eighty-five billion, two hundred twenty-nine million, nine hundred eighty-one thousand, four hundred seventy-two".