728832311047 has 4 divisors (see below), whose sum is σ = 745781899720. Its totient is φ = 711882722376.

The previous prime is 728832311029. The next prime is 728832311063. The reversal of 728832311047 is 740113238827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740113238827 = 6793 ⋅108952339.

It is a cyclic number.

It is not a de Polignac number, because 728832311047 - 2⁷ = 728832310919 is a prime.

It is a super-2 number, since 2×728832311047² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 728832310988 and 728832311006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728832311017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8474794272 + ... + 8474794357.

It is an arithmetic number, because the mean of its divisors is an integer number (186445474930).

Almost surely, 2^728832311047 is an apocalyptic number.

728832311047 is a deficient number, since it is larger than the sum of its proper divisors (16949588673).

728832311047 is a wasteful number, since it uses less digits than its factorization.

728832311047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16949588672.

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 728832311047 in words is "seven hundred twenty-eight billion, eight hundred thirty-two million, three hundred eleven thousand, forty-seven".