728333260705 has 4 divisors (see below), whose sum is σ = 873999912852. Its totient is φ = 582666608560.

The previous prime is 728333260693. The next prime is 728333260757. The reversal of 728333260705 is 507062333827.

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

It can be written as a sum of positive squares in 2 ways, for example, as 486065529856 + 242267730849 = 697184^2 + 492207^2 .

It is not a de Polignac number, because 728333260705 - 2²⁵ = 728299706273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72833326066 + ... + 72833326075.

It is an arithmetic number, because the mean of its divisors is an integer number (218499978213).

Almost surely, 2^728333260705 is an apocalyptic number.

It is an amenable number.

728333260705 is a deficient number, since it is larger than the sum of its proper divisors (145666652147).

728333260705 is a wasteful number, since it uses less digits than its factorization.

728333260705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145666652146.

The product of its (nonzero) digits is 1270080, while the sum is 46.

The spelling of 728333260705 in words is "seven hundred twenty-eight billion, three hundred thirty-three million, two hundred sixty thousand, seven hundred five".