728345752 has 16 divisors (see below), whose sum is σ = 1367749440. Its totient is φ = 363612576.

The previous prime is 728345741. The next prime is 728345767. The reversal of 728345752 is 257543827.

728345752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 728345699 and 728345708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64488 + ... + 74935.

It is an arithmetic number, because the mean of its divisors is an integer number (85484340).

Almost surely, 2^728345752 is an apocalyptic number.

It is an amenable number.

728345752 is a deficient number, since it is larger than the sum of its proper divisors (639403688).

728345752 is a wasteful number, since it uses less digits than its factorization.

728345752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140082 (or 140078 counting only the distinct ones).

The product of its digits is 470400, while the sum is 43.

The square root of 728345752 is about 26987.8815767374. The cubic root of 728345752 is about 899.7306815564.

It can be divided in two parts, 7283 and 45752, that added together give a palindrome (53035).

The spelling of 728345752 in words is "seven hundred twenty-eight million, three hundred forty-five thousand, seven hundred fifty-two".