728304213675 has 18 divisors (see below), whose sum is σ = 1204141852732. Its totient is φ = 388424972240.

The previous prime is 728304213647. The next prime is 728304213701. The reversal of 728304213675 is 576312403827.

It is not a de Polignac number, because 728304213675 - 2¹³ = 728304205483 is a prime.

It is a super-3 number, since 3×728304213675³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7341454 + ... + 7439996.

Almost surely, 2^728304213675 is an apocalyptic number.

728304213675 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

728304213675 is a deficient number, since it is larger than the sum of its proper divisors (475837639057).

728304213675 is an frugal number, since it uses more digits than its factorization.

728304213675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197099 (or 98551 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 48.

Multiplying 728304213675 by its sum of digits (48), we get a square (34958602256400 = 5912580²).

The spelling of 728304213675 in words is "seven hundred twenty-eight billion, three hundred four million, two hundred thirteen thousand, six hundred seventy-five".