728845786 has 8 divisors (see below), whose sum is σ = 1118693664. Its totient is φ = 355947900.

The previous prime is 728845783. The next prime is 728845813. The reversal of 728845786 is 687548827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (728845783) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4237390 + ... + 4237561.

It is an arithmetic number, because the mean of its divisors is an integer number (139836708).

Almost surely, 2^728845786 is an apocalyptic number.

728845786 is a deficient number, since it is larger than the sum of its proper divisors (389847878).

728845786 is a wasteful number, since it uses less digits than its factorization.

728845786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8474996.

The product of its digits is 6021120, while the sum is 55.

The square root of 728845786 is about 26997.1440341381. The cubic root of 728845786 is about 899.9365329730.

The spelling of 728845786 in words is "seven hundred twenty-eight million, eight hundred forty-five thousand, seven hundred eighty-six".