728726372247 has 16 divisors (see below), whose sum is σ = 1029143070432. Its totient is φ = 457083233280.

The previous prime is 728726372243. The next prime is 728726372249. The reversal of 728726372247 is 742273627827.

It is not a de Polignac number, because 728726372247 - 2² = 728726372243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728726372243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2300454 + ... + 2597987.

It is an arithmetic number, because the mean of its divisors is an integer number (64321441902).

Almost surely, 2^728726372247 is an apocalyptic number.

728726372247 is a deficient number, since it is larger than the sum of its proper divisors (300416698185).

728726372247 is a wasteful number, since it uses less digits than its factorization.

728726372247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4901378.

The product of its digits is 22127616, while the sum is 57.

The spelling of 728726372247 in words is "seven hundred twenty-eight billion, seven hundred twenty-six million, three hundred seventy-two thousand, two hundred forty-seven".