728110643 has 12 divisors (see below), whose sum is σ = 790972848. Its totient is φ = 669932640.

The previous prime is 728110637. The next prime is 728110657. The reversal of 728110643 is 346011827.

728110643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 728110643 - 2¹⁴ = 728094259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728110633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46778 + ... + 60368.

It is an arithmetic number, because the mean of its divisors is an integer number (65914404).

Almost surely, 2^728110643 is an apocalyptic number.

728110643 is a deficient number, since it is larger than the sum of its proper divisors (62862205).

728110643 is a wasteful number, since it uses less digits than its factorization.

728110643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13934 (or 13921 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 728110643 is about 26983.5253997694. The cubic root of 728110643 is about 899.6338605318.

The spelling of 728110643 in words is "seven hundred twenty-eight million, one hundred ten thousand, six hundred forty-three".