728238740757 has 8 divisors (see below), whose sum is σ = 1059256350240. Its totient is φ = 441356812560.

The previous prime is 728238740741. The next prime is 728238740833. The reversal of 728238740757 is 757047832827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 728238740757 - 2⁴ = 728238740741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 728238740757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728238740737) by changing a digit.

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, 11033920282 + ... + 11033920347.

It is an arithmetic number, because the mean of its divisors is an integer number (132407043780).

Almost surely, 2^728238740757 is an apocalyptic number.

It is an amenable number.

728238740757 is a deficient number, since it is larger than the sum of its proper divisors (331017609483).

728238740757 is a wasteful number, since it uses less digits than its factorization.

728238740757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22067840643.

The product of its (nonzero) digits is 36879360, while the sum is 60.

The spelling of 728238740757 in words is "seven hundred twenty-eight billion, two hundred thirty-eight million, seven hundred forty thousand, seven hundred fifty-seven".