728478843573 has 32 divisors (see below), whose sum is σ = 1121849688960. Its totient is φ = 416686982400.

The previous prime is 728478843563. The next prime is 728478843581. The reversal of 728478843573 is 375348874827.

It is not a de Polignac number, because 728478843573 - 2⁹ = 728478843061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728478843563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9235278 + ... + 9313823.

It is an arithmetic number, because the mean of its divisors is an integer number (35057802780).

Almost surely, 2^728478843573 is an apocalyptic number.

It is an amenable number.

728478843573 is a deficient number, since it is larger than the sum of its proper divisors (393370845387).

728478843573 is a wasteful number, since it uses less digits than its factorization.

728478843573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18549189.

The product of its digits is 252887040, while the sum is 66.

The spelling of 728478843573 in words is "seven hundred twenty-eight billion, four hundred seventy-eight million, eight hundred forty-three thousand, five hundred seventy-three".