728873525426 has 4 divisors (see below), whose sum is σ = 1093310288142. Its totient is φ = 364436762712.

The previous prime is 728873525411. The next prime is 728873525431. The reversal of 728873525426 is 624525378827.

728873525426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 553855966225 + 175017559201 = 744215^2 + 418351^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182218381355 + ... + 182218381358.

Almost surely, 2^728873525426 is an apocalyptic number.

728873525426 is a deficient number, since it is larger than the sum of its proper divisors (364436762716).

728873525426 is a wasteful number, since it uses less digits than its factorization.

728873525426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364436762715.

The product of its digits is 45158400, while the sum is 59.

The spelling of 728873525426 in words is "seven hundred twenty-eight billion, eight hundred seventy-three million, five hundred twenty-five thousand, four hundred twenty-six".