728345798 has 4 divisors (see below), whose sum is σ = 1092518700. Its totient is φ = 364172898.

The previous prime is 728345789. The next prime is 728345801. The reversal of 728345798 is 897543827.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182086448 + ... + 182086451.

It is an arithmetic number, because the mean of its divisors is an integer number (273129675).

Almost surely, 2^728345798 is an apocalyptic number.

728345798 is a deficient number, since it is larger than the sum of its proper divisors (364172902).

728345798 is a wasteful number, since it uses less digits than its factorization.

728345798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364172901.

The product of its digits is 3386880, while the sum is 53.

The square root of 728345798 is about 26987.8824289717. The cubic root of 728345798 is about 899.7307004977.

The spelling of 728345798 in words is "seven hundred twenty-eight million, three hundred forty-five thousand, seven hundred ninety-eight".