728173752 has 32 divisors (see below), whose sum is σ = 1851292800. Its totient is φ = 238610144.

The previous prime is 728173723. The next prime is 728173783. The reversal of 728173752 is 257371827.

728173752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255708 + ... + 258539.

It is an arithmetic number, because the mean of its divisors is an integer number (57852900).

Almost surely, 2^728173752 is an apocalyptic number.

It is an amenable number.

728173752 is an abundant number, since it is smaller than the sum of its proper divisors (1123119048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

728173752 is a wasteful number, since it uses less digits than its factorization.

728173752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514315 (or 514311 counting only the distinct ones).

The product of its digits is 164640, while the sum is 42.

The square root of 728173752 is about 26984.6947731487. The cubic root of 728173752 is about 899.6598517066.

The spelling of 728173752 in words is "seven hundred twenty-eight million, one hundred seventy-three thousand, seven hundred fifty-two".