728708469766 has 4 divisors (see below), whose sum is σ = 1093062704652. Its totient is φ = 364354234882.

The previous prime is 728708469763. The next prime is 728708469799. The reversal of 728708469766 is 667964807827.

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

It is a junction number, because it is equal to n+sod(n) for n = 728708469695 and 728708469704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728708469763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182177117440 + ... + 182177117443.

It is an arithmetic number, because the mean of its divisors is an integer number (273265676163).

Almost surely, 2^728708469766 is an apocalyptic number.

728708469766 is a deficient number, since it is larger than the sum of its proper divisors (364354234886).

728708469766 is a wasteful number, since it uses less digits than its factorization.

728708469766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364354234885.

The product of its (nonzero) digits is 341397504, while the sum is 70.

The spelling of 728708469766 in words is "seven hundred twenty-eight billion, seven hundred eight million, four hundred sixty-nine thousand, seven hundred sixty-six".