728271166 has 16 divisors (see below), whose sum is σ = 1255443840. Its totient is φ = 310371480.

The previous prime is 728271163. The next prime is 728271169. The reversal of 728271166 is 661172827.

728271166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (728271163) and next prime (728271169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728271163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142800 + ... + 147811.

It is an arithmetic number, because the mean of its divisors is an integer number (78465240).

Almost surely, 2^728271166 is an apocalyptic number.

728271166 is a deficient number, since it is larger than the sum of its proper divisors (527172674).

728271166 is a wasteful number, since it uses less digits than its factorization.

728271166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290799.

The product of its digits is 56448, while the sum is 40.

The square root of 728271166 is about 26986.4996989235. The cubic root of 728271166 is about 899.6999683027.

The spelling of 728271166 in words is "seven hundred twenty-eight million, two hundred seventy-one thousand, one hundred sixty-six".