728067205 has 4 divisors (see below), whose sum is σ = 873680652. Its totient is φ = 582453760.

The previous prime is 728067199. The next prime is 728067227. The reversal of 728067205 is 502760827.

728067205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 485673444 + 242393761 = 22038^2 + 15569^2 .

It is not a de Polignac number, because 728067205 - 2⁵ = 728067173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72806716 + ... + 72806725.

It is an arithmetic number, because the mean of its divisors is an integer number (218420163).

Almost surely, 2^728067205 is an apocalyptic number.

It is an amenable number.

728067205 is a deficient number, since it is larger than the sum of its proper divisors (145613447).

728067205 is a wasteful number, since it uses less digits than its factorization.

728067205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145613446.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 728067205 is about 26982.7204892316. The cubic root of 728067205 is about 899.6159699025.

The spelling of 728067205 in words is "seven hundred twenty-eight million, sixty-seven thousand, two hundred five".