728434726080322 has 4 divisors (see below), whose sum is σ = 1092652089120486. Its totient is φ = 364217363040160.

The previous prime is 728434726080301. The next prime is 728434726080337. The reversal of 728434726080322 is 223080627434827.

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., 475261407841081 + 253173318239241 = 21800491^2 + 15911421^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182108681520079 + ... + 182108681520082.

Almost surely, 2^{728434726080322} is an apocalyptic number.

728434726080322 is a deficient number, since it is larger than the sum of its proper divisors (364217363040164).

728434726080322 is a wasteful number, since it uses less digits than its factorization.

728434726080322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364217363040163.

The product of its (nonzero) digits is 43352064, while the sum is 58.

The spelling of 728434726080322 in words is "seven hundred twenty-eight trillion, four hundred thirty-four billion, seven hundred twenty-six million, eighty thousand, three hundred twenty-two".