728757440198 has 16 divisors (see below), whose sum is σ = 1106705196240. Its totient is φ = 359882873856.

The previous prime is 728757440123. The next prime is 728757440251. The reversal of 728757440198 is 891044757827.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 728757440198.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 6737615 + ... + 6844922.

It is an arithmetic number, because the mean of its divisors is an integer number (69169074765).

Almost surely, 2^728757440198 is an apocalyptic number.

728757440198 is a deficient number, since it is larger than the sum of its proper divisors (377947756042).

728757440198 is a wasteful number, since it uses less digits than its factorization.

728757440198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13582871.

The product of its (nonzero) digits is 31610880, while the sum is 62.

The spelling of 728757440198 in words is "seven hundred twenty-eight billion, seven hundred fifty-seven million, four hundred forty thousand, one hundred ninety-eight".