855289728 has 48 divisors (see below), whose sum is σ = 2461188600. Its totient is φ = 285096192.

The previous prime is 855289709. The next prime is 855289741. The reversal of 855289728 is 827982558.

855289728 is a `hidden beast` number, since 8 + 5 + 528 + 97 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 370068 + ... + 372371.

Almost surely, 2^855289728 is an apocalyptic number.

It is an amenable number.

855289728 is an abundant number, since it is smaller than the sum of its proper divisors (1605898872).

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

855289728 is a wasteful number, since it uses less digits than its factorization.

855289728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742459 (or 742444 counting only the distinct ones).

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

The square root of 855289728 is about 29245.3368590618. The cubic root of 855289728 is about 949.2291911879.

The spelling of 855289728 in words is "eight hundred fifty-five million, two hundred eighty-nine thousand, seven hundred twenty-eight".