704728 has 16 divisors (see below), whose sum is σ = 1333080. Its totient is φ = 349248.

The previous prime is 704719. The next prime is 704731. The reversal of 704728 is 827407.

It is a junction number, because it is equal to n+sod(n) for n = 704696 and 704705.

It is a congruent number.

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, 775 + ... + 1417.

2⁷⁰⁴⁷²⁸ is an apocalyptic number.

It is an amenable number.

704728 is a deficient number, since it is larger than the sum of its proper divisors (628352).

704728 is a wasteful number, since it uses less digits than its factorization.

704728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 704728 is about 839.4807919184. The cubic root of 704728 is about 88.9898570270.

The spelling of 704728 in words is "seven hundred four thousand, seven hundred twenty-eight".