728354736 has 60 divisors (see below), whose sum is σ = 2040260040. Its totient is φ = 242561280.

The previous prime is 728354717. The next prime is 728354741. The reversal of 728354736 is 637453827.

728354736 is a `hidden beast` number, since 72 + 8 + 3 + 547 + 36 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 728354691 and 728354700.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 246355 + ... + 249293.

It is an arithmetic number, because the mean of its divisors is an integer number (34004334).

Almost surely, 2^728354736 is an apocalyptic number.

It is an amenable number.

728354736 is an abundant number, since it is smaller than the sum of its proper divisors (1311905304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728354736 is a wasteful number, since it uses less digits than its factorization.

728354736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674 (or 4665 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 728354736 is about 26988.0480213001. The cubic root of 728354736 is about 899.7343808742.

Subtracting from 728354736 its reverse (637453827), we obtain a palindrome (90900909).

The spelling of 728354736 in words is "seven hundred twenty-eight million, three hundred fifty-four thousand, seven hundred thirty-six".