728351232 has 80 divisors (see below), whose sum is σ = 2217602112. Its totient is φ = 208097280.

The previous prime is 728351219. The next prime is 728351233. The reversal of 728351232 is 232153827.

It is a junction number, because it is equal to n+sod(n) for n = 728351193 and 728351202.

It is not an unprimeable number, because it can be changed into a prime (728351233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23119 + ... + 44622.

Almost surely, 2^728351232 is an apocalyptic number.

It is an amenable number.

728351232 is an abundant number, since it is smaller than the sum of its proper divisors (1489250880).

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

728351232 is an equidigital number, since it uses as much as digits as its factorization.

728351232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67769 (or 67753 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 728351232 is about 26987.9831035963. The cubic root of 728351232 is about 899.7329380450.

The spelling of 728351232 in words is "seven hundred twenty-eight million, three hundred fifty-one thousand, two hundred thirty-two".