720332 has 12 divisors (see below), whose sum is σ = 1273776. Its totient is φ = 356400.

The previous prime is 720319. The next prime is 720359. The reversal of 720332 is 233027.

It is a self number, because there is not a number n which added to its sum of digits gives 720332.

It is an unprimeable number.

720332 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488 + ... + 1295.

It is an arithmetic number, because the mean of its divisors is an integer number (106148).

2⁷²⁰³³² is an apocalyptic number.

It is an amenable number.

720332 is a deficient number, since it is larger than the sum of its proper divisors (553444).

720332 is a wasteful number, since it uses less digits than its factorization.

720332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888 (or 1886 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 17.

The square root of 720332 is about 848.7237477531. The cubic root of 720332 is about 89.6418689844.

Adding to 720332 its reverse (233027), we get a palindrome (953359).

The spelling of 720332 in words is "seven hundred twenty thousand, three hundred thirty-two".