285895728 has 60 divisors (see below), whose sum is σ = 803259600. Its totient is φ = 94923648.

The previous prime is 285895723. The next prime is 285895787. The reversal of 285895728 is 827598582.

285895728 is a `hidden beast` number, since 2 + 8 + 589 + 57 + 2 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (285895723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34098 + ... + 41646.

It is an arithmetic number, because the mean of its divisors is an integer number (13387660).

Almost surely, 2^285895728 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 285895728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401629800).

285895728 is an abundant number, since it is smaller than the sum of its proper divisors (517363872).

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

285895728 is a wasteful number, since it uses less digits than its factorization.

285895728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7826 (or 7817 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The square root of 285895728 is about 16908.4513779352. The cubic root of 285895728 is about 658.7731478555.

The spelling of 285895728 in words is "two hundred eighty-five million, eight hundred ninety-five thousand, seven hundred twenty-eight".