728981366 has 8 divisors (see below), whose sum is σ = 1141014384. Its totient is φ = 348643240.

The previous prime is 728981347. The next prime is 728981371. The reversal of 728981366 is 663189827.

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

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, 7923665 + ... + 7923756.

It is an arithmetic number, because the mean of its divisors is an integer number (142626798).

Almost surely, 2^728981366 is an apocalyptic number.

728981366 is a deficient number, since it is larger than the sum of its proper divisors (412033018).

728981366 is a wasteful number, since it uses less digits than its factorization.

728981366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15847446.

The product of its digits is 870912, while the sum is 50.

The square root of 728981366 is about 26999.6549237208. The cubic root of 728981366 is about 899.9923316219.

The spelling of 728981366 in words is "seven hundred twenty-eight million, nine hundred eighty-one thousand, three hundred sixty-six".