728733156423364 has 9 divisors (see below), whose sum is σ = 1275283118223597. Its totient is φ = 364366551216624.

The previous prime is 728733156423361. The next prime is 728733156423407. The reversal of 728733156423364 is 463324651337827.

The square root of 728733156423364 is 26995058.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 646305641741764 + 82427514681600 = 25422542^2 + 9078960^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 728733156423296 and 728733156423305.

It is not an unprimeable number, because it can be changed into a prime (728733156423361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 47241352 + ... + 60738880.

Almost surely, 2^{728733156423364} is an apocalyptic number.

728733156423364 is the 26995058-th square number.

It is an amenable number.

728733156423364 is a deficient number, since it is larger than the sum of its proper divisors (546549961800233).

728733156423364 is an frugal number, since it uses more digits than its factorization.

728733156423364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26995062 (or 13497531 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 64.

The spelling of 728733156423364 in words is "seven hundred twenty-eight trillion, seven hundred thirty-three billion, one hundred fifty-six million, four hundred twenty-three thousand, three hundred sixty-four".