728055173 has 8 divisors (see below), whose sum is σ = 734109600. Its totient is φ = 722012688.

The previous prime is 728055169. The next prime is 728055187. The reversal of 728055173 is 371550827.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 728055173 - 2² = 728055169 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728055143) 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, 151790 + ... + 156512.

It is an arithmetic number, because the mean of its divisors is an integer number (91763700).

Almost surely, 2^728055173 is an apocalyptic number.

It is an amenable number.

728055173 is a deficient number, since it is larger than the sum of its proper divisors (6054427).

728055173 is a wasteful number, since it uses less digits than its factorization.

728055173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5971.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 728055173 is about 26982.4975308069. The cubic root of 728055173 is about 899.6110142066.

The spelling of 728055173 in words is "seven hundred twenty-eight million, fifty-five thousand, one hundred seventy-three".