285106128 has 80 divisors (see below), whose sum is σ = 758659776. Its totient is φ = 92206080.

The previous prime is 285106123. The next prime is 285106139. The reversal of 285106128 is 821601582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285106121) 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 15 ways as a sum of consecutive naturals, for example, 544875 + ... + 545397.

Almost surely, 2^285106128 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 285106128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379329888).

285106128 is an abundant number, since it is smaller than the sum of its proper divisors (473553648).

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

285106128 is a wasteful number, since it uses less digits than its factorization.

285106128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 285106128 is about 16885.0859636544. The cubic root of 285106128 is about 658.1661119835.

The spelling of 285106128 in words is "two hundred eighty-five million, one hundred six thousand, one hundred twenty-eight".