285538222208 has 72 divisors (see below), whose sum is σ = 577637620605. Its totient is φ = 140595729408.

The previous prime is 285538222133. The next prime is 285538222219. The reversal of 285538222208 is 802222835582.

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 284225464384 + 1312757824 = 533128^2 + 36232^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=377848.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 441326141 + ... + 441326787.

Almost surely, 2^285538222208 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 285538222208

285538222208 is an abundant number, since it is smaller than the sum of its proper divisors (292099398397).

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

285538222208 is an frugal number, since it uses more digits than its factorization.

285538222208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 47.

The spelling of 285538222208 in words is "two hundred eighty-five billion, five hundred thirty-eight million, two hundred twenty-two thousand, two hundred eight".