728934811 has 32 divisors (see below), whose sum is σ = 835660800. Its totient is φ = 630115200.

The previous prime is 728934809. The next prime is 728934821. The reversal of 728934811 is 118439827.

It is not a de Polignac number, because 728934811 - 2¹ = 728934809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728934821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3662890 + ... + 3663088.

It is an arithmetic number, because the mean of its divisors is an integer number (26114400).

Almost surely, 2^728934811 is an apocalyptic number.

728934811 is a deficient number, since it is larger than the sum of its proper divisors (106725989).

728934811 is a wasteful number, since it uses less digits than its factorization.

728934811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427.

The product of its digits is 96768, while the sum is 43.

The square root of 728934811 is about 26998.7927693073. The cubic root of 728934811 is about 899.9731724514.

It can be divided in two parts, 728 and 934811, that added together give a palindrome (935539).

The spelling of 728934811 in words is "seven hundred twenty-eight million, nine hundred thirty-four thousand, eight hundred eleven".