728846312 has 8 divisors (see below), whose sum is σ = 1366586850. Its totient is φ = 364423152.

The previous prime is 728846309. The next prime is 728846341. The reversal of 728846312 is 213648827.

It can be written as a sum of positive squares in only one way, i.e., 669463876 + 59382436 = 25874^2 + 7706^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 728846312.

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 as a sum of consecutive naturals, namely, 45552887 + ... + 45552902.

Almost surely, 2^728846312 is an apocalyptic number.

It is an amenable number.

728846312 is a deficient number, since it is larger than the sum of its proper divisors (637740538).

728846312 is a wasteful number, since it uses less digits than its factorization.

728846312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91105795 (or 91105791 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 728846312 is about 26997.1537759076. The cubic root of 728846312 is about 899.9367494644.

The spelling of 728846312 in words is "seven hundred twenty-eight million, eight hundred forty-six thousand, three hundred twelve".