728171528 has 32 divisors (see below), whose sum is σ = 1570719360. Its totient is φ = 310003200.

The previous prime is 728171501. The next prime is 728171537. The reversal of 728171528 is 825171827.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34601 + ... + 51512.

It is an arithmetic number, because the mean of its divisors is an integer number (49084980).

Almost surely, 2^728171528 is an apocalyptic number.

It is an amenable number.

728171528 is an abundant number, since it is smaller than the sum of its proper divisors (842547832).

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

728171528 is a wasteful number, since it uses less digits than its factorization.

728171528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86277 (or 86273 counting only the distinct ones).

The product of its digits is 62720, while the sum is 41.

The square root of 728171528 is about 26984.6535645726. The cubic root of 728171528 is about 899.6589357871.

The spelling of 728171528 in words is "seven hundred twenty-eight million, one hundred seventy-one thousand, five hundred twenty-eight".