728443143 has 12 divisors (see below), whose sum is σ = 1097943600. Its totient is φ = 464514336.

The previous prime is 728443127. The next prime is 728443169. The reversal of 728443143 is 341344827.

728443143 is a `hidden beast` number, since 72 + 8 + 443 + 143 = 666.

728443143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 728443143 - 2⁴ = 728443127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 728443098 and 728443107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728443193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1759318 + ... + 1759731.

It is an arithmetic number, because the mean of its divisors is an integer number (91495300).

Almost surely, 2^728443143 is an apocalyptic number.

728443143 is a deficient number, since it is larger than the sum of its proper divisors (369500457).

728443143 is a wasteful number, since it uses less digits than its factorization.

728443143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519078 (or 3519075 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 728443143 is about 26989.6858633071. The cubic root of 728443143 is about 899.7707823671.

The spelling of 728443143 in words is "seven hundred twenty-eight million, four hundred forty-three thousand, one hundred forty-three".