728341511 has 4 divisors (see below), whose sum is σ = 728418312. Its totient is φ = 728264712.

The previous prime is 728341477. The next prime is 728341519. The reversal of 728341511 is 115143827.

728341511 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 728341511 - 2⁶ = 728341447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728341519) 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, 21776 + ... + 43941.

It is an arithmetic number, because the mean of its divisors is an integer number (182104578).

Almost surely, 2^728341511 is an apocalyptic number.

728341511 is a deficient number, since it is larger than the sum of its proper divisors (76801).

728341511 is a wasteful number, since it uses less digits than its factorization.

728341511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76800.

The product of its digits is 6720, while the sum is 32.

The square root of 728341511 is about 26987.8030043203. The cubic root of 728341511 is about 899.7289352405.

The spelling of 728341511 in words is "seven hundred twenty-eight million, three hundred forty-one thousand, five hundred eleven".