728284616 has 16 divisors (see below), whose sum is σ = 1402440540. Its totient is φ = 354300480.

The previous prime is 728284603. The next prime is 728284621. The reversal of 728284616 is 616482827.

It can be written as a sum of positive squares in 2 ways, for example, as 688012900 + 40271716 = 26230^2 + 6346^2 .

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, 1229915 + ... + 1230506.

Almost surely, 2^728284616 is an apocalyptic number.

It is an amenable number.

728284616 is a deficient number, since it is larger than the sum of its proper divisors (674155924).

728284616 is a wasteful number, since it uses less digits than its factorization.

728284616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460464 (or 2460460 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 728284616 is about 26986.7488964492. The cubic root of 728284616 is about 899.7055069403.

The spelling of 728284616 in words is "seven hundred twenty-eight million, two hundred eighty-four thousand, six hundred sixteen".