728082827578 has 16 divisors (see below), whose sum is σ = 1100755777320. Its totient is φ = 361167422976.

The previous prime is 728082827569. The next prime is 728082827579. The reversal of 728082827578 is 875728280827.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 711092487169 + 16990340409 = 843263^2 + 130347^2 .

It is not an unprimeable number, because it can be changed into a prime (728082827579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338751 + ... + 1253362.

Almost surely, 2^728082827578 is an apocalyptic number.

728082827578 is a deficient number, since it is larger than the sum of its proper divisors (372672949742).

728082827578 is a wasteful number, since it uses less digits than its factorization.

728082827578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593921.

The product of its (nonzero) digits is 56197120, while the sum is 64.

The spelling of 728082827578 in words is "seven hundred twenty-eight billion, eighty-two million, eight hundred twenty-seven thousand, five hundred seventy-eight".