728727827 has 4 divisors (see below), whose sum is σ = 735943056. Its totient is φ = 721512600.

The previous prime is 728727787. The next prime is 728727871.

728727827 is nontrivially palindromic in base 10.

728727827 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 is a cyclic number.

It is not a de Polignac number, because 728727827 - 2¹² = 728723731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728727877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3607463 + ... + 3607664.

It is an arithmetic number, because the mean of its divisors is an integer number (183985764).

Almost surely, 2^728727827 is an apocalyptic number.

728727827 is a deficient number, since it is larger than the sum of its proper divisors (7215229).

728727827 is a wasteful number, since it uses less digits than its factorization.

728727827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7215228.

The product of its digits is 1229312, while the sum is 50.

The square root of 728727827 is about 26994.9592887265. The cubic root of 728727827 is about 899.8879807082.

The spelling of 728727827 in words is "seven hundred twenty-eight million, seven hundred twenty-seven thousand, eight hundred twenty-seven".