728173052 has 6 divisors (see below), whose sum is σ = 1274302848. Its totient is φ = 364086524.

The previous prime is 728173013. The next prime is 728173067. The reversal of 728173052 is 250371827.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91021628 + ... + 91021635.

It is an arithmetic number, because the mean of its divisors is an integer number (212383808).

Almost surely, 2^728173052 is an apocalyptic number.

It is an amenable number.

728173052 is a deficient number, since it is larger than the sum of its proper divisors (546129796).

728173052 is a wasteful number, since it uses less digits than its factorization.

728173052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182043267 (or 182043265 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 728173052 is about 26984.6818028303. The cubic root of 728173052 is about 899.6595634228.

The spelling of 728173052 in words is "seven hundred twenty-eight million, one hundred seventy-three thousand, fifty-two".